We can see two trapezoidal tailpipes as well.
我们可以看到两个梯形排气管以及。
The separate flushing(air) system can be connected with shank adaptors by internal or external rope thread or trapezoidal thread . The customers can order according to their own requirements.
旁侧供水（风）系统钎尾有内外波形、梯形螺纹连接，用户可根据需要单独订货。
Same can be said for Triangular and Trapezoidal Screw systems, and it would be difficult to hand-rotate without some "play".
在非滚动丝杠系统中，存在同样的现象，如果没有间隙，手动转动将变得非常困难。
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