窗户已经插上栓，上了锁，都关好了。
具有多重安全保障及自锁功能，无需别家任何栓门器材。
Three, with multiple security and self-locking function, do not need any other door equipment.
这种锁舌用螺丝装在锁支架上，而锁支架用螺丝固定或焊接在门上，无锁芯的装配时，可用锥形四方匙开启锁栓为自由行程。
Slam latch is screwed onto latch support which is either screwed or welded to the door. Assembled without insert it can be opened with a tapered square key. Bolt has free stroke.
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