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有些具有立體鑰匙孔的廣
鎖稱為「迷宮鎖」或「定向鎖」，
其鑰匙孔位於底面接近端面的
直角處，開鑿成「工」字形。
這類鎖具的特徵是：其鑰匙不
容易直接插入鑰匙孔。
Some broad locks with spatial
keyholes are called "labyrinth locks"
or "fix-orientation locks". They
have their keyholes located at the
vertical corner formed by the bottom
side and one side-end of the lock-
body with the shape of a "
工
" letter.
The main characteristic of this type
of locks is that it is not easy to insert
the key into the keyhole.
‧定向鎖鑰匙孔
Keyhole of fix-orientation lock
86x40x20mm 189g