双护罩滚珠轴承: ball bearing with double side shieldsdouble shield ball bearing
襟: 名词1.(上衣、袍子前面的部分) front of a garment 短语和例子大襟 the front of a chinese garment which buttons on the right2.(胸怀) bosom; mind 短语和例子胸襟 mind; breadth of mind3.(连襟) brothers-in-law whose wives are