... hard valve 高真空电子管, 硬性电子管 head valve 头阀 顶置阀 heat control valve 热控制阀, 加热控制阀 ...
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介绍了大口径船用瓶头阀的结构、性能和设计要点，该阀具有设计新颖，密封可靠的特点。
To introduce the structure, performance and key elements of the design of large diameter Marine cylinder valve. It is original in choice of design and has a reliable sealing feature.
这项分析和单个火炬头的最大安全阀负荷有关。
The analys is about the maximum safety valve load on each flare header.
对阀盘、耳轴活塞杆头的染料渗透剂测试。
Dye-penetrant testing of the disc trunnions and piston rod heads.
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