You can magnetize a needle by rubbing it with a magnet.

用磁铁磨擦针可使之磁化。

It has vanguard technology of friction welding and chroming and so on.

具磨擦焊接和镀铬等先进生产工艺。

Pain with motion is the predominant finding， and crepitation may be palpated with pa ive motion.

最突出的表现是活动，被动活动可触到磨擦感。

It is pronoumced by raising the tongue tip against the upper teethridge to block the air and then putting it down to release the air.

下唇和上齿接触，形一条狭缝，气流从狭缝中磨擦而出。

Small cubage and large filling capacity make rubber stopper difficult to drift when washing, one another extrude and attrite, bring badly rubber scurfs and bad washing.

积小，装大，使胶在清洗产生堆积而无法浮动，相互挤压磨擦，会严重产生胶皮屑和清洗不好。