The inner surface at one open end of the plastic layer has the thread, and the thread on the plastic layer is connected with the thread on the metal insert.
上述塑料层的一开口端内表面开设有螺纹，该塑料层上的螺纹与金属嵌件上的螺纹相连接。
2
The microstructure of the thread machined by form tapping showed a layer of fine fiber distribution along the thread profile.
加工的挤压螺纹表面有一层纤维沿其牙形连续分布。
3
For the multiple thread devices, the semiconductor body is either a layer on one or more of the threads or an elongated body disposed between two of the threads.