{"id":527,"date":"2025-07-01T01:58:49","date_gmt":"2025-07-01T01:58:49","guid":{"rendered":"https:\/\/www.coefficientfriction.com\/?p=527"},"modified":"2025-07-01T01:58:50","modified_gmt":"2025-07-01T01:58:50","slug":"how-to-measure-coefficient-of-friction","status":"publish","type":"post","link":"https:\/\/www.coefficientfriction.com\/ar\/how-to-measure-coefficient-of-friction","title":{"rendered":"\u0643\u064a\u0641\u064a\u0629 \u0642\u064a\u0627\u0633 \u0645\u0639\u0627\u0645\u0644 \u0627\u0644\u0627\u062d\u062a\u0643\u0627\u0643: \u062f\u0644\u064a\u0644 \u0643\u0627\u0645\u0644"},"content":{"rendered":"<p>\u0639\u0646\u062f\u0645\u0627 \u064a\u062a\u0639\u0644\u0642 \u0627\u0644\u0623\u0645\u0631 \u0628\u062a\u062d\u062f\u064a\u062f \u0623\u062f\u0627\u0621 \u0627\u0644\u0645\u0648\u0627\u062f\u060c \u062e\u0627\u0635\u0629\u064b \u0641\u064a \u0627\u0644\u062a\u0639\u0628\u0626\u0629 \u0648\u0627\u0644\u062a\u063a\u0644\u064a\u0641 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\u0627\u0644\u0645\u0633\u062a\u062e\u062f\u0645\u0629 \u0641\u064a \u0642\u064a\u0627\u0633 \u0645\u0639\u0627\u0645\u0644 \u0627\u0644\u0627\u062d\u062a\u0643\u0627\u0643\u060c \u0645\u0639 \u0627\u0644\u062a\u0631\u0643\u064a\u0632 \u0639\u0644\u0649 \u0645\u0639\u0627\u064a\u064a\u0631 ASTM F1894 \u0648ISO 8295\u060c \u0648\u0633\u0646\u0642\u062f\u0645 \u0631\u0624\u0649 \u062d\u0648\u0644 \u0643\u064a\u0641\u064a\u0629 \u062a\u0639\u0632\u064a\u0632 \u062c\u0647\u0627\u0632 \u0627\u062e\u062a\u0628\u0627\u0631 \u0627\u0644\u0627\u062d\u062a\u0643\u0627\u0643 \u0627\u0644\u0623\u0641\u0642\u064a COF-01 \u0645\u0646 Cell Instruments \u0645\u0646 \u062f\u0642\u0629 \u0627\u0644\u0627\u062e\u062a\u0628\u0627\u0631.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u0641\u0647\u0645 \u0645\u0639\u0627\u0645\u0644 \u0627\u0644\u0627\u062d\u062a\u0643\u0627\u0643<\/h2>\n\n\n\n<p>\u0645\u0639\u0627\u0645\u0644 \u0627\u0644\u0627\u062d\u062a\u0643\u0627\u0643 (COF) \u0647\u0648 \u0645\u0642\u064a\u0627\u0633 \u0644\u0644\u0645\u0642\u0627\u0648\u0645\u0629 \u0627\u0644\u062a\u064a \u062a\u0648\u0627\u062c\u0647\u0647\u0627 \u0639\u0646\u062f\u0645\u0627 \u062a\u0646\u0632\u0644\u0642 \u0645\u0627\u062f\u0629 \u0639\u0644\u0649 \u0623\u062e\u0631\u0649. \u0647\u0630\u0627 \u0627\u0644\u0642\u064a\u0627\u0633 \u0645\u0647\u0645 \u0644\u062a\u0642\u064a\u064a\u0645 \u0623\u062f\u0627\u0621 \u0627\u0644\u0631\u0642\u0627\u0626\u0642 \u0648\u0627\u0644\u0635\u0641\u0627\u0626\u062d \u0648\u0627\u0644\u0645\u0648\u0627\u062f \u0627\u0644\u0623\u062e\u0631\u0649 \u0641\u064a \u0628\u064a\u0626\u0627\u062a \u0627\u0644\u062a\u063a\u0644\u064a\u0641 \u0648\u0627\u0644\u0625\u0646\u062a\u0627\u062c.<\/p>\n\n\n\n<p>\u0647\u0646\u0627\u0643 \u0646\u0648\u0639\u0627\u0646 \u0631\u0626\u064a\u0633\u064a\u0627\u0646 \u0645\u0646 \u0627\u0644\u0627\u062d\u062a\u0643\u0627\u0643 \u0627\u0644\u0645\u0642\u0627\u0633:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u0627\u0644\u0627\u062d\u062a\u0643\u0627\u0643 \u0627\u0644\u0633\u0627\u0643\u0646:<\/strong> \u0627\u0644\u0645\u0642\u0627\u0648\u0645\u0629 \u0627\u0644\u062a\u064a \u062a\u0648\u0627\u062c\u0647\u0647\u0627 \u0639\u0646\u062f\u0645\u0627 \u064a\u0643\u0648\u0646 \u0627\u0644\u062c\u0633\u0645 \u0641\u064a \u062d\u0627\u0644\u0629 \u0633\u0643\u0648\u0646.<\/li>\n\n\n\n<li><strong>\u0627\u0644\u0627\u062d\u062a\u0643\u0627\u0643 \u0627\u0644\u062f\u064a\u0646\u0627\u0645\u064a\u0643\u064a:<\/strong> \u0642\u0648\u0629 \u0627\u0644\u0627\u062d\u062a\u0643\u0627\u0643 \u0627\u0644\u062a\u064a \u062a\u0648\u0627\u062c\u0647\u0647\u0627 \u0628\u0645\u062c\u0631\u062f \u0623\u0646 \u064a\u0628\u062f\u0623 \u0627\u0644\u062c\u0633\u0645 \u0641\u064a \u0627\u0644\u062d\u0631\u0643\u0629.<\/li>\n<\/ul>\n\n\n\n<p>\u0648\u062a\u0633\u0627\u0639\u062f \u0647\u0630\u0647 \u0627\u0644\u0642\u064a\u0627\u0633\u0627\u062a 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\u0644\u0644\u0645\u0648\u0627\u0635\u0641\u0629 ASTM D1894 \u0648\u0644\u0643\u0646\u0647\u0627 \u062a\u062a\u0636\u0645\u0646 \u062a\u0641\u0627\u0635\u064a\u0644 \u0645\u062d\u062f\u062f\u0629 \u0644\u0644\u062a\u0643\u064a\u064a\u0641 \u0648\u0625\u0639\u062f\u0627\u062f \u0627\u0644\u0639\u064a\u0646\u0627\u062a\u060c \u0645\u0645\u0627 \u064a\u062c\u0639\u0644\u0647\u0627 \u0645\u062b\u0627\u0644\u064a\u0629 \u0644\u0645\u0631\u0627\u0642\u0628\u0629 \u0627\u0644\u062c\u0648\u062f\u0629.<\/li>\n<\/ol>\n\n\n\n<p>\u064a\u062a\u0636\u0645\u0646 \u0643\u0644\u0627 \u0627\u0644\u0645\u0639\u064a\u0627\u0631\u064a\u0646 \u0648\u0636\u0639 \u0639\u064a\u0646\u0627\u062a \u0627\u0644\u0627\u062e\u062a\u0628\u0627\u0631 \u062a\u062d\u062a \u0636\u063a\u0637 \u0645\u0648\u062d\u062f \u0648\u0642\u064a\u0627\u0633 \u0627\u0644\u0642\u0648\u0629 \u0627\u0644\u0645\u0637\u0644\u0648\u0628\u0629 \u0644\u0628\u062f\u0621 \u0627\u0644\u062d\u0631\u0643\u0629 \u0623\u0648 \u0627\u0644\u062d\u0641\u0627\u0638 \u0639\u0644\u064a\u0647\u0627. \u062a\u0648\u0641\u0631 \u0647\u0630\u0647 \u0627\u0644\u0627\u062e\u062a\u0628\u0627\u0631\u0627\u062a \u0628\u064a\u0627\u0646\u0627\u062a \u0645\u0648\u062b\u0648\u0642\u0629 \u0644\u0644\u062a\u062d\u0643\u0645 \u0641\u064a \u062e\u0635\u0627\u0626\u0635 \u0627\u0644\u0645\u0648\u0627\u062f \u0648\u062a\u062d\u0633\u064a\u0646 \u0623\u062f\u0627\u0621 \u0627\u0644\u0645\u0646\u062a\u062c.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u0627\u0633\u062a\u062e\u062f\u0627\u0645 \u0645\u0627\u0643\u064a\u0646\u0629 \u0627\u062e\u062a\u0628\u0627\u0631 \u0627\u0644\u0627\u062d\u062a\u0643\u0627\u0643 \u0644\u0642\u064a\u0627\u0633 \u0645\u0639\u0627\u0645\u0644 \u0627\u0644\u0627\u062d\u062a\u0643\u0627\u0643 COF<\/h2>\n\n\n\n<p>\u064a\u062a\u0637\u0644\u0628 \u0642\u064a\u0627\u0633 \u0645\u0639\u0627\u0645\u0644 \u0627\u0644\u0627\u062d\u062a\u0643\u0627\u0643 \u0645\u0639\u062f\u0627\u062a \u0645\u062a\u062e\u0635\u0635\u0629. A <strong>\u0622\u0644\u0629 \u0627\u062e\u062a\u0628\u0627\u0631 \u0627\u0644\u0627\u062d\u062a\u0643\u0627\u0643<\/strong> \u0645\u0635\u0645\u0645\u0629 \u0644\u0642\u064a\u0627\u0633 \u0627\u0644\u0642\u0648\u0649 \u0627\u0644\u0645\u0624\u062b\u0631\u0629 \u0628\u064a\u0646 \u0633\u0637\u062d\u064a\u0646 \u0628\u062f\u0642\u0629. \u064a\u0645\u0643\u0646 \u062a\u0639\u062f\u064a\u0644 \u0647\u0630\u0647 \u0627\u0644\u0645\u0627\u0643\u064a\u0646\u0627\u062a \u0644\u0627\u062e\u062a\u0628\u0627\u0631 \u0627\u0644\u0645\u0648\u0627\u062f \u0648\u0627\u0644\u0638\u0631\u0648\u0641 \u0627\u0644\u0645\u062e\u062a\u0644\u0641\u0629\u060c \u0628\u0645\u0627 \u0641\u064a \u0630\u0644\u0643 \u0627\u0644\u0627\u062e\u062a\u0644\u0627\u0641\u0627\u062a \u0641\u064a \u0627\u0644\u0636\u063a\u0637 \u0648\u0627\u0644\u0633\u0631\u0639\u0629 \u0648\u062f\u0631\u062c\u0629 \u0627\u0644\u062d\u0631\u0627\u0631\u0629.<\/p>\n\n\n\n<p><strong>\u0633\u0639\u0631 \u0645\u0627\u0643\u064a\u0646\u0629 \u0627\u062e\u062a\u0628\u0627\u0631 \u0627\u0644\u0627\u062d\u062a\u0643\u0627\u0643:<\/strong> \u064a\u0645\u0643\u0646 \u0623\u0646 \u064a\u062e\u062a\u0644\u0641 \u0633\u0639\u0631 \u062c\u0647\u0627\u0632 \u0627\u062e\u062a\u0628\u0627\u0631 \u0627\u0644\u0627\u062d\u062a\u0643\u0627\u0643 \u062d\u0633\u0628 \u0627\u0644\u0645\u064a\u0632\u0627\u062a \u0648\u0627\u0644\u062f\u0642\u0629 \u0648\u062e\u064a\u0627\u0631\u0627\u062a \u0627\u0644\u062a\u062e\u0635\u064a\u0635. \u0639\u0627\u062f\u0629\u064b \u0645\u0627 \u062a\u0643\u0648\u0646 \u0627\u0644\u0646\u0645\u0627\u0630\u062c \u0639\u0627\u0644\u064a\u0629 \u0627\u0644\u062c\u0648\u062f\u0629 \u0645\u062b\u0644 <strong>Cell Instruments <\/strong><a href=\"https:\/\/www.coefficientfriction.com\/ar\/\"><strong>\u0627\u0644\u0646\u0648\u0639 \u0627\u0644\u0623\u0641\u0642\u064a COF-01<\/strong><\/a> \u062a\u0648\u0641\u0631 \u0645\u064a\u0632\u0627\u062a \u0645\u062a\u0642\u062f\u0645\u0629 \u0648\u0645\u062b\u0627\u0644\u064a\u0629 \u0644\u0643\u0644 \u0645\u0646 \u0627\u062e\u062a\u0628\u0627\u0631 \u0627\u0644\u0627\u062d\u062a\u0643\u0627\u0643 \u0627\u0644\u062b\u0627\u0628\u062a \u0648\u0627\u0644\u062f\u064a\u0646\u0627\u0645\u064a\u0643\u064a. \u0627\u0644\u062a\u0643\u0644\u0641\u0629 \u0647\u064a \u0627\u0633\u062a\u062b\u0645\u0627\u0631 \u0641\u064a \u0636\u0645\u0627\u0646 \u0646\u062a\u0627\u0626\u062c \u0627\u062e\u062a\u0628\u0627\u0631 \u062f\u0642\u064a\u0642\u0629 \u0648\u0642\u0627\u0628\u0644\u0629 \u0644\u0644\u062a\u0643\u0631\u0627\u0631.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u0639\u0645\u0644\u064a\u0629 \u0642\u064a\u0627\u0633 \u0645\u0639\u0627\u0645\u0644 \u0627\u0644\u0627\u062d\u062a\u0643\u0627\u0643 \u062e\u0637\u0648\u0629 \u0628\u062e\u0637\u0648\u0629 \u0644\u0642\u064a\u0627\u0633 \u0645\u0639\u0627\u0645\u0644 \u0627\u0644\u0627\u062d\u062a\u0643\u0627\u0643<\/h2>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u062a\u062d\u0636\u064a\u0631 \u0639\u064a\u0646\u0627\u062a \u0627\u0644\u0627\u062e\u062a\u0628\u0627\u0631:<\/strong>\n<ul class=\"wp-block-list\">\n<li>\u0625\u0639\u062f\u0627\u062f \u0639\u064a\u0646\u062a\u064a \u0627\u062e\u062a\u0628\u0627\u0631 \u0628\u0633\u0637\u062d \u0645\u0648\u062d\u062f. \u0642\u062f \u062a\u062d\u062a\u0627\u062c \u0627\u0644\u0645\u0627\u062f\u0629 \u0625\u0644\u0649 \u062a\u0643\u064a\u064a\u0641\u0647\u0627 \u0639\u0646\u062f \u062f\u0631\u062c\u0629 \u062d\u0631\u0627\u0631\u0629 23 \u00b1 2 \u062f\u0631\u062c\u0629 \u0645\u0626\u0648\u064a\u0629 \u0648\u0631\u0637\u0648\u0628\u0629 \u0646\u0633\u0628\u064a\u0629 50 \u00b1 10%\u060c \u0648\u0641\u0642\u064b\u0627 \u0644\u0625\u0631\u0634\u0627\u062f\u0627\u062a ASTM \u0623\u0648 ISO.<\/li>\n\n\n\n<li>\u0628\u0627\u0644\u0646\u0633\u0628\u0629 \u0644\u0644\u0645\u0639\u064a\u0627\u0631 ASTM D1894\u060c \u0639\u0627\u062f\u0629\u064b \u0645\u0627 \u062a\u0643\u0648\u0646 \u0639\u064a\u0646\u0629 \u0627\u0644\u0627\u062e\u062a\u0628\u0627\u0631 \u0639\u0628\u0627\u0631\u0629 \u0639\u0646 \u063a\u0634\u0627\u0621 \u0623\u0648 \u0644\u0648\u062d \u0628\u0644\u0627\u0633\u062a\u064a\u0643\u064a\u060c \u0628\u064a\u0646\u0645\u0627 \u0628\u0627\u0644\u0646\u0633\u0628\u0629 \u0644\u0644\u0645\u0639\u064a\u0627\u0631 ISO 8295\u060c \u064a\u0645\u0643\u0646 \u0627\u062e\u062a\u0628\u0627\u0631 \u0643\u0644 \u0645\u0646 \u0627\u0644\u063a\u0634\u0627\u0621 \u0648\u0627\u0644\u0645\u0648\u0627\u062f \u0627\u0644\u0623\u062e\u0631\u0649.<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>\u0625\u0639\u062f\u0627\u062f \u062c\u0647\u0627\u0632 \u0627\u062e\u062a\u0628\u0627\u0631 \u0627\u0644\u0627\u062d\u062a\u0643\u0627\u0643:<\/strong>\n<ul class=\"wp-block-list\">\n<li>\u0636\u0639 \u0639\u064a\u0646\u0629 \u0627\u0644\u0627\u062e\u062a\u0628\u0627\u0631 \u0627\u0644\u0623\u0648\u0644\u0649 \u0639\u0644\u0649 \u0633\u0637\u062d \u0623\u0641\u0642\u064a \u062b\u0627\u0628\u062a.<\/li>\n\n\n\n<li>\u0642\u0645 \u0628\u062a\u0648\u0635\u064a\u0644 \u0627\u0644\u0639\u064a\u0646\u0629 \u0627\u0644\u062b\u0627\u0646\u064a\u0629 \u0628\u0645\u0632\u0644\u062c\u0629 \u0623\u0648 \u062c\u0647\u0627\u0632 \u0627\u062e\u062a\u0628\u0627\u0631 \u0622\u062e\u0631\u060c \u0645\u0639 \u0627\u0644\u062a\u0623\u0643\u062f \u0645\u0646 \u0623\u0646 \u0627\u0644\u0642\u0648\u0629 \u0627\u0644\u0645\u0637\u0628\u0642\u0629 \u0639\u0644\u0649 \u0627\u0644\u0633\u0637\u062d \u062b\u0627\u0628\u062a\u0629.<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>\u0625\u062c\u0631\u0627\u0621 \u0627\u0644\u0627\u062e\u062a\u0628\u0627\u0631:<\/strong>\n<ul class=\"wp-block-list\">\n<li>\u0627\u0628\u062f\u0623 \u0627\u0644\u0627\u062e\u062a\u0628\u0627\u0631 \u0628\u062a\u062d\u0631\u064a\u0643 \u0627\u0644\u0632\u0644\u0627\u062c\u0629 \u0623\u0648 \u0625\u062d\u062f\u0649 \u0627\u0644\u0639\u064a\u0646\u0627\u062a \u0639\u0628\u0631 \u0627\u0644\u0633\u0637\u062d. \u064a\u062a\u0645 \u062a\u0633\u062c\u064a\u0644 \u0627\u0644\u0642\u0648\u0629 \u0627\u0644\u0645\u0637\u0644\u0648\u0628\u0629 \u0644\u0628\u062f\u0621 \u0627\u0644\u062d\u0631\u0643\u0629 \u0648\u0627\u0644\u062d\u0641\u0627\u0638 \u0639\u0644\u064a\u0647\u0627.<\/li>\n\n\n\n<li>\u0628\u0627\u0644\u0646\u0633\u0628\u0629 \u0644\u0644\u0627\u062d\u062a\u0643\u0627\u0643 \u0627\u0644\u0633\u0643\u0648\u0646\u064a\u060c \u0633\u062c\u0650\u0651\u0644 \u0623\u0642\u0635\u0649 \u0642\u0648\u0629 \u0642\u0628\u0644 \u0623\u0646 \u062a\u0628\u062f\u0623 \u0627\u0644\u0639\u064a\u0646\u0629 \u0641\u064a \u0627\u0644\u0627\u0646\u0632\u0644\u0627\u0642. \u0628\u0627\u0644\u0646\u0633\u0628\u0629 \u0644\u0644\u0627\u062d\u062a\u0643\u0627\u0643 \u0627\u0644\u062f\u064a\u0646\u0627\u0645\u064a\u0643\u064a\u060c \u0642\u0645 \u0628\u0642\u064a\u0627\u0633 \u0627\u0644\u0642\u0648\u0629 \u0628\u0645\u062c\u0631\u062f \u0623\u0646 \u062a\u0628\u062f\u0623 \u0627\u0644\u0645\u0627\u062f\u0629 \u0641\u064a \u0627\u0644\u062d\u0631\u0643\u0629.<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>\u062a\u0641\u0633\u064a\u0631 \u0627\u0644\u0646\u062a\u0627\u0626\u062c:<\/strong>\n<ul class=\"wp-block-list\">\n<li>\u064a\u064f\u062d\u0633\u0628 \u0645\u0639\u0627\u0645\u0644 \u0627\u0644\u0627\u062d\u062a\u0643\u0627\u0643 \u0627\u0644\u0633\u0627\u0643\u0646 (\u03bcs) \u0643\u0646\u0633\u0628\u0629 \u0627\u0644\u0642\u0648\u0629 \u0627\u0644\u0642\u0635\u0648\u0649 \u0625\u0644\u0649 \u0627\u0644\u0642\u0648\u0629 \u0627\u0644\u0639\u0645\u0648\u062f\u064a\u0629.<\/li>\n\n\n\n<li>\u064a\u064f\u0634\u062a\u0642 \u0645\u0639\u0627\u0645\u0644 \u0627\u0644\u0627\u062d\u062a\u0643\u0627\u0643 \u0627\u0644\u062f\u064a\u0646\u0627\u0645\u064a\u0643\u064a (\u03bcd) \u0645\u0646 \u0645\u062a\u0648\u0633\u0637 \u0627\u0644\u0642\u0648\u0629 \u0623\u062b\u0646\u0627\u0621 \u0627\u0644\u062d\u0631\u0643\u0629.<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n\n\n\n<h2 class=\"wp-block-heading\">\u0627\u062e\u062a\u064a\u0627\u0631 \u062c\u0647\u0627\u0632 \u0627\u062e\u062a\u0628\u0627\u0631 \u0627\u0644\u0627\u062d\u062a\u0643\u0627\u0643 \u0627\u0644\u0645\u0646\u0627\u0633\u0628<\/h2>\n\n\n\n<p>\u0625\u0646 <strong>\u0623\u062f\u0648\u0627\u062a \u0627\u0644\u062e\u0644\u0627\u064a\u0627 COF-01 \u0627\u0644\u0646\u0648\u0639 \u0627\u0644\u0623\u0641\u0642\u064a COF-01<\/strong> \u062c\u0647\u0627\u0632 \u0627\u062e\u062a\u0628\u0627\u0631 \u0627\u0644\u0627\u062d\u062a\u0643\u0627\u0643 \u0647\u0648 \u0623\u062f\u0627\u0629 \u0645\u0648\u0635\u0649 \u0628\u0647\u0627 \u0644\u0644\u063a\u0627\u064a\u0629 \u0644\u0642\u064a\u0627\u0633 \u0643\u0644 \u0645\u0646 \u0645\u0639\u0627\u0645\u0644\u0627\u062a \u0627\u0644\u0627\u062d\u062a\u0643\u0627\u0643 \u0627\u0644\u062b\u0627\u0628\u062a\u0629 \u0648\u0627\u0644\u062f\u064a\u0646\u0627\u0645\u064a\u0643\u064a\u0629 \u0628\u062f\u0642\u0629. \u064a\u0648\u0641\u0631 \u0647\u0630\u0627 \u0627\u0644\u0637\u0631\u0627\u0632 \u062a\u062d\u0643\u0645\u064b\u0627 \u062f\u0642\u064a\u0642\u064b\u0627 \u0641\u064a \u0638\u0631\u0648\u0641 \u0627\u0644\u0627\u062e\u062a\u0628\u0627\u0631 \u0648\u064a\u0636\u0645\u0646 \u0646\u062a\u0627\u0626\u062c \u0642\u0627\u0628\u0644\u0629 \u0644\u0644\u062a\u0643\u0631\u0627\u0631 \u0644\u0645\u062e\u062a\u0644\u0641 \u0627\u0644\u0645\u0648\u0627\u062f\u060c \u0628\u0645\u0627 \u0641\u064a \u0630\u0644\u0643 \u0627\u0644\u0628\u0644\u0627\u0633\u062a\u064a\u0643 \u0648\u0627\u0644\u0623\u063a\u0634\u064a\u0629 \u0648\u0627\u0644\u0645\u0646\u0633\u0648\u062c\u0627\u062a. \u0643\u0645\u0627 \u0623\u0646 \u062a\u0639\u062f\u062f \u0627\u0633\u062a\u062e\u062f\u0627\u0645\u0627\u062a\u0647 \u0648\u0633\u0647\u0648\u0644\u0629 \u0627\u0633\u062a\u062e\u062f\u0627\u0645\u0647 \u064a\u062c\u0639\u0644\u0627\u0646 \u0645\u0646\u0647 \u0623\u062f\u0627\u0629 \u0642\u064a\u0645\u0629 \u0644\u0645\u0631\u0627\u0642\u0628\u0629 \u0627\u0644\u062c\u0648\u062f\u0629 \u0648\u0627\u0644\u0628\u062d\u062b \u0648\u0627\u0644\u062a\u0637\u0648\u064a\u0631 \u0641\u064a \u0627\u0644\u0635\u0646\u0627\u0639\u0627\u062a \u0627\u0644\u062a\u064a \u062a\u0639\u062a\u0645\u062f \u0639\u0644\u0649 \u0642\u064a\u0627\u0633\u0627\u062a \u062f\u0642\u064a\u0642\u0629 \u0644\u0644\u0627\u062d\u062a\u0643\u0627\u0643.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u0627\u0644\u062e\u0627\u062a\u0645\u0629<\/h2>\n\n\n\n<p>\u064a\u064f\u0639\u062f \u0642\u064a\u0627\u0633 \u0645\u0639\u0627\u0645\u0644 \u0627\u0644\u0627\u062d\u062a\u0643\u0627\u0643 \u062e\u0637\u0648\u0629 \u062d\u0627\u0633\u0645\u0629 \u0641\u064a \u0641\u0647\u0645 \u062e\u0635\u0627\u0626\u0635 \u0627\u0644\u0645\u0648\u0627\u062f \u0648\u0636\u0645\u0627\u0646 \u0627\u0644\u0623\u062f\u0627\u0621 \u0627\u0644\u0623\u0645\u062b\u0644 \u0641\u064a \u0627\u0644\u062a\u0635\u0646\u064a\u0639 \u0648\u0627\u0644\u062a\u0639\u0628\u0626\u0629 \u0648\u0627\u0644\u062a\u063a\u0644\u064a\u0641. \u0627\u0644\u0627\u0644\u062a\u0632\u0627\u0645 \u0628\u0627\u0644\u0645\u0639\u0627\u064a\u064a\u0631 \u0645\u062b\u0644 ASTM D1894 \u0648 <a href=\"https:\/\/www.coefficientfriction.com\/ar\/iso-8295\/\">\u0623\u064a\u0632\u0648 8295<\/a> \u064a\u0636\u0645\u0646 \u0625\u062c\u0631\u0627\u0621 \u0627\u0644\u0627\u062e\u062a\u0628\u0627\u0631\u0627\u062a \u0641\u064a \u0638\u0631\u0648\u0641 \u062e\u0627\u0636\u0639\u0629 \u0644\u0644\u0631\u0642\u0627\u0628\u0629\u060c \u0645\u0645\u0627 \u064a\u0648\u0641\u0631 \u0646\u062a\u0627\u0626\u062c \u0645\u0648\u062b\u0648\u0642\u0629. \u0645\u0646 \u062e\u0644\u0627\u0644 \u0627\u0644\u0627\u0633\u062a\u062b\u0645\u0627\u0631 \u0641\u064a \u0645\u0639\u062f\u0627\u062a \u0639\u0627\u0644\u064a\u0629 \u0627\u0644\u062c\u0648\u062f\u0629\u060c \u0645\u062b\u0644 <strong>\u0623\u062f\u0648\u0627\u062a \u0627\u0644\u062e\u0644\u064a\u0629 COF-01<\/strong>\u060c \u064a\u0645\u0643\u0646 \u0644\u0644\u0634\u0631\u0643\u0627\u062a \u062a\u062d\u0633\u064a\u0646 \u062c\u0648\u062f\u0629 \u0627\u0644\u0645\u0646\u062a\u062c \u0648\u062a\u0628\u0633\u064a\u0637 \u0639\u0645\u0644\u064a\u0627\u062a \u0627\u0644\u0625\u0646\u062a\u0627\u062c.<\/p>\n\n\n\n<p>\u0628\u0627\u0644\u0646\u0633\u0628\u0629 \u0644\u0623\u064a \u0634\u0631\u0643\u0629 \u062a\u062a\u0639\u0627\u0645\u0644 \u0645\u0639 \u0645\u0648\u0627\u062f \u0645\u062b\u0644 \u0627\u0644\u0631\u0642\u0627\u0626\u0642 \u0648\u0627\u0644\u0635\u0641\u0627\u0626\u062d \u0648\u0627\u0644\u0645\u0648\u0627\u062f \u0627\u0644\u0644\u0627\u0635\u0642\u0629\u060c \u0641\u0625\u0646 \u0645\u0639\u0631\u0641\u0629 \u0643\u064a\u0641\u064a\u0629 \u0642\u064a\u0627\u0633 \u0645\u0639\u0627\u0645\u0644 \u0627\u0644\u0627\u062d\u062a\u0643\u0627\u0643 \u064a\u0645\u0643\u0646 \u0623\u0646 \u062a\u0648\u0641\u0631 \u0645\u064a\u0632\u0629 \u062a\u0646\u0627\u0641\u0633\u064a\u0629 \u0641\u064a \u0643\u0641\u0627\u0621\u0629 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