阀杆头部尺寸 Dimension of valve stem head ; dimensofvalvstemhead
调速阀杆接头 [机] governor valve stem connection
阀杆接头销螺母 valve-rod head-pin nut
推杆阀快速接头 stem valve coupling
阀杆连杆接头 rod link head
阀杆接头销 rod head pin
阀杆头
Valve stem head
以上为机器翻译结果，长、整句建议使用 人工翻译 。
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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当关闭通道时，用阀杆的楔形头使球体涨开与阀座压紧达到密封。
When the closed channel, the wedge-shaped head with a stem to open up the ball and pressed to seal the valve seat.
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