词汇	备用动力
释义	备用动力 standby power
随便看	Valve plate type piston pump valve play valve plug valve plunger valvepneumatic valve pocket valve point valve point curve valve-point effects valve point internal efficiency valve-point internal efficiency valve point performance curve valve-point performance curve valve points valve port valve port diameter Valve port dynamic pressure feed-back valve position valve position control valve positioner Valve Positioner/ Valve Positioners valve position feedback valve position flow characteristic valve position-flow characteristic