latchn.门闩；碰锁；弹簧锁v.上闩；缠着；明白latch-down key锁停键, 锁下键latching network闭锁网络latching voltage闭锁电压latch link plate卡齿连接板latching current闭锁电流,最大接入电流latch J-Horner打捞器latched position锁定位置latch-in relay闩锁继电器latchup analysis闭锁分析latch handle pin弹键柄销