直接作用式调节阀;自力式调节阀:direct-operated regulator 直接作用式电压调整器:direct-acting voltage regulator ..
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... direct mounting gauge,直接安装压力表 direct-operated regulator,直接作用式调节阀;自力式调节阀 direct probe inlet,直接探头进样 ...
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直接作用自力式调节阀 dircct-operated regulator
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