将管件分成与管子连接的两端的承插部分（1）和中间的弯曲部分（2）。
The pipe fitting is divided into a socket part (1) of two ends connected with a tube and a central bending part (2).
将管件分成与管子连接的两端的承插部分（1）和中间的弯曲部分（2）。
The pipe fitting is divided into a socket part (1) of two ends connected with a tube and a central bending part (2).
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