Each frame to doors fitted with a mortice lock is to be slotted for bolt, correctly positioned and to have a mortice cap welded on at back of perforation.
为匹配安装暗锁的门，
要为锁舌开槽，通
在其后打孔，在槽内焊接榫帽，使其正确
位。
Each frame to doors fitted with a mortice lock is to be slotted for bolt, correctly positioned and to have a mortice cap welded on at back of perforation.
为匹配安装暗锁的门，要为锁舌开槽，通在其后打孔，在槽内焊接榫帽，使其正确位。
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