micro-pressure type pilot-operated regulating valves
... 自力式调节阀 self-operated pressure regulating valves 氮封阀 micro-pressure type pilot-operated regulating valves 切断阀 shut-off valves ...
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micro-pressure type pilot-operated regulating valves
微压式先导式调节阀
以上为机器翻译结果，长、整句建议使用 人工翻译 。