预定: fix in advance; predetermine ...位: place; location控制机构: control organ; controlet; co ...预定位控制: preoperative control; preselector control液位控制机构: level control mechanism定位控制: constant position control; positioning control定位控制线: normal control wire无定位控制: floating control阀控制机构: valve control device控制机构: control agency; control gear; control mechanism; control organization; control structure; controlling gear; controlling institution; controlling mechanism; controlling organization; operating controls流控制机构: flow control mechanismtcb定位控制器: tcb position光电定位控制: photoelectric register control精确定位控制: pinpoint control数字定位控制: numerical positioning control; numerical procedure无定位控制器: floating controller并行控制机构: concurrent control mechanism磁带控制机构: tape control unit; tape-control unit存取控制机构: acce control mechanism; access control mechanism带盘控制机构: reel control mechanism等级控制机构: hierarchical control mechanism; hierarchical mechanism阀门控制机构: valve control mechanism辅助控制机构: auxiliary controls回授控制机构: feedback control mechanism混合控制机构: mixed control feature