1. A small projection through which grease in a grease gun can be forced into a bearing. 
   滑油嘴一个小的突起，通过它滑油枪中的润滑油能被注入轴承
2. a hand-operated pump that resembles a gun; forces grease into parts of a machine. 
   一种手操作的形状像枪的泵；使得油进入机器中。
3. preservative oil and grease 
   防锈油脂
4. To lubricate with grease. 
   用油润滑，给…上润滑油
5. synthetic lubricating oil and grease 
   合成润滑油脂

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• 1. 枪脂
  gun depth 气枪沉放深度...gun grease 枪脂...gun perforated casing 射孔套管
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• 2. 枪用润滑脂
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