... butterfly circuit 蝶形电路 butterfly control valve 蝶形控制阀 butterfly damper 蝶形挡板，蝶阀 ...
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... by-path valve 旁通阀, 匡助阀, 回流阀 butterfly control valve 蝶形节制阀 air pressure governor valve 风压调压阀 ...
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Baumann 25000 butterfly control valve is a low torque and low noise butterfly valve.
鲍曼25000蝶阀控制阀是一种低扭矩，低噪音蝶阀。
The company specializes in the production of various kinds of electric pneumatic control valve, butterfly valves, valve.
本公司专业生产各类气动电动调节阀、蝶阀、球阀。
Introduction of the selection procedure of control ball valve and butterfly valve and the empiric selection of the coefficient in calculation.
介绍了调节型球阀和蝶阀选用的步骤及计算中一些系数的经验取法。
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