accumulator spool  蓄能器线圈

actuator spool  致动器线圈

actuator spool deadband width  致动器线圈死区幅度

adaptor spool  接头短管

affected control valve compensator spool  起作用的控制阀补偿线圈

apron control valve spool  闸门控制阀芯

arm spool pin  插线钉

armature spool  电枢线圈

articulated spool piece  铰接联接短管段

attachment spool assembly  附属装置滑阀总成

attachment valve spool  附属阀芯

automatic spool  假脱机; 自动排存

auxiliary valve spool  辅助阀芯

blind flanged spool piece  盲法兰短管

blowout preventer and spool  防喷器及其在井口上连接的法兰短节

bobbin spool  双边筒管

body hoist spool  车体吊车卷筒

boom control spool  动臂控制阀芯

boom control valve spool  动臂控制阀芯

boom cylinder control valve spool  动臂油缸控制阀芯