阀定位 meaning in Chinese

valve setting

Industrial process control systems - part 2 : methods of evaluating the performance of intelligent valve positioners with pneumatic outputs iec 61514 - 2 : 2004 ; german version en 61514 - 2 : 2004
工业过程控制系统.第2部分:带气动输出的智能阀定位器
Industrial - process control valves - part 6 - 2 : mounting details for attachment of positioners to control valves - positioner mounting on rotary actuators iec 60534 - 6 - 2 : 2000 ; german version en 60534 - 6 - 2 : 2001
工业过程控制阀.第6 - 2部分:控制阀定位器安装细则.旋