three position valve 三通阀 ; 三位阀
two position three-way valve 二位三通阀
three position four way valve 三位四通阀
three-position solenoid valve 三位电磁阀
three position four-way electrohy-draulic valve 三位四通电液阀
three position four-way valve 三位四通阀
Two-position three-way pneumatic control valve 二位三通气控阀
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