英德
有道
百度
谷歌
图片
维基
百科
直流阀
straight-way valve
- 多种交流和直流电磁阀线圈的宽阔选择；
Wide choice of coils for A. C. and D. C; - 管件止回阀是为直流金属管线设计的三段式结构止回阀。
The Tubing Check Valve is a three-piece construction check valve designed for use with straight metal tube. - 总结了多年试验的经验，给出了管状直流阀的结构设计、结构参数的选取原则和选取范围。
Based on many years , experience from our research and experiments structural design, constructional parameters and choosing range of tubular valve was introduced.
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