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1·The crowned teeth gear circumferential restriction gear pair is an important part of the differential hydraulic motor with bevel gear transmission.

鼓形齿轮周向限制副是锥差式液压马达的重要部件，鼓形齿轮的加工质量直接关系到周向限制副的各项性能指标。

2·I've had one of my teeth crowned.

我的一颗牙齿镶了假齿冠。《牛津词典》

3·Her teeth had to be crowned with special cement.

她的牙齿不得不镶上特殊的粘固剂。