When a tooth is fractured, has a large old filling, or is severely damaged by decay, your dentist may recommend the placement of a crown or cap.
如果您的牙齿裂开、有一个很大的填充体或者因龋齿而严重受损，您的牙医可能建议您安装牙冠或牙套。
It is used for filling and sealing various kind of glass bottle with crown type bottle mouth.
用于玻璃瓶、皇冠盖的啤酒灌装及封口。
It is used for filling and sealing various kind of glass bottle with crown type bottle mouth.
用于玻璃瓶、皇冠盖的啤酒灌装及封口。
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