internal rope thread 内圆牙螺纹
To thread the rope 穿绳索
thread rope [材] 线绳
Rope and Thread 绳和线
rope thread
绳线
以上为机器翻译结果，长、整句建议使用 人工翻译 。
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。
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