hand-operated valve的意思|示意

手动阀 ... hand-operated two-beam crane手动双梁吊车 hand-operated valve手动阀 hand-operated winch手摇绞车 ...

手动门 ... hand-operated valve 手动阀 ; 手动门 hand operated bypass valve 手动旁通阀 hand-operated direction valve 手动换向阀 ...

手控阀 ... hand-operated direction valve 手动换向阀 hand-operated valve 手动阀; 手控阀 hand-regulating expansion valve 手调节膨胀阀 ...

手动操作阀 ... 人工操作阀 manually-operated valve 手动操作阀 hand-operated valve 踏板操作阀 treadle operated valve ...