cup-jewel

基本解释

These cup jewels are chiefly applied to electronic meter, hot water meter, liquid measuring instrument and movement system of single-phase and triphase KHW meter.
供应说明： Cup jewels contain four types: spherical bearing; conical bearings; double cups on one face bearing; and single cup on double surfaces bearing.
A price of $1000 was set on the jewel thief's head.
悬赏1000美元抓住这个珠宝窃贼。
The duchess bedeck herself with jewel.
公爵夫人用珠宝装扮自己。
He locked up the jewel before going away.
他在离开以前把珠宝锁藏起来。
The book is the jewel of his collection.
这本书是他藏书中最珍贵的一本。