设计调制式旋转导向钻井工具控制阀的关键问题之一是上盘阀高压孔的设计。
One of the key problems of designing the control valve of modulation rotary steering drilling tool is the design of high pressure hole of upside valve.
电力行业对控制阀耐高温和耐高压的要求是最高的。
Control valves for the power industry resistance to high temperature and high pressure is the highest of demands.
电力行业对控制阀耐高温和耐高压的要求是最高的。
Control valves for the power industry resistance to high temperature and high pressure is the highest of demands.
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