The pulp is located in a hollow canal in the center of the tooth..
牙髓的位置在牙齿中间的空管中。
In the end, a new configuration used for linking hollow axle - end tooth table is designed and the configuration and hollow axle are analyzed on stress intensity.
最后，设计了一种用于空心轴联接的新型结构—端齿结构，并对该端齿结构和空心轴进行强度分析。
The utility model discloses an oral cleaning device-a tooth sprayer which is composed of a spray head which is hollow, a water discharge flexible pipe and a clip.
本实用新型公开了一种由喷头，送水软管和夹扣组成的口腔清洁器具牙喷。
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