可以通过行程指示表来直观控制阀门开启程度。
It can control degree of the headstock of valve directly through travel indicator.
钢瓶更换和正确操作的良好程序在最大程度减少这种阀门的问题方面也是很关键的。
Good procedures for cylinder and proper operation are also key in minimizing problems with this valve.
使这个问题复杂化的是阀门不能承受任何程度的虐待。
To compound this problem the valves do not withstand this abusive treatment to any great extent.
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