磨擦

• I can ' t build a fire by rubbing two pieces of wood together
  我总不能靠着磨擦两片木柴来取火吧。
• Plane frictional watertight rudder carriers
  平面磨擦水密上舵承
• Standard test methods for friction tapes
  磨擦带的标准试验方法
• Crepitation made by sharp broken bones can be heard upon palpation
  移动时，可能感觉到有断骨磨擦。
• Preparation of substrate surfaces for coefficient of friction testing
  磨擦系数测试用基物表面的制备
• Conveyor belts . drum friction testing
  传送带.滚筒磨擦测试
• Methods for chemical analysis of friction materials of powder metallurgy
  粉末冶金磨擦材料化学分析方法
• Multi - disc self - locking differential
  磨擦片式自锁差速器
• Sibling rivalry competition between siblings is natural in a family
  兄弟姊妹发生磨擦与争执是在所难免。
• Powder metallurgy friction material
  粉末冶金磨擦材料