frictionfactor

常见例句

• Keywords Friction;Wear;Frictionfactor;Carbon-carbon composite;
  摩擦;磨损;摩擦系数;碳／碳复合材料;
• High frictionfactor decreased;Hardness has been increased by ten percent;
  摩擦系数 大大下降、硬度提高10%25左右；
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