?滚针

对叶片泵叶片结构改进的探索 --中国期刊网 关键词：滑动摩擦；滚动摩擦；滚针；径向放置 [gap=655]Key Words：sliding friction; rolling friction; needle roller; radial lay

?卷叶虫

卷叶虫(needle roller), 此释义来源于网络辞典。

?滚针轴承

...needle针,针状物,针阀needle(-)bearing滚针轴承needle lift(喷油嘴)针阀升程needle nose plier(s)尖嘴钳needle roller(滚针轴承)滚针needle seat(喷油器)针阀座needle valve针阀negative①负的,阴极的②负[反,逆]向的③否认的,反面的negative cable(蓄干电池)...