As a reminder, secure pages are easily recognizable by a lock (or other equivalent) in the lower right hand corner of the browser.
作为提示，安全页面可以很容易地通过浏览器右下角的锁(或其他等效标记)来识别。
The mortise lock assembled with the handle clutch device can be used for left and right hand door, so that the universality of the lock can be improved.
装配了这种离合装置的插芯锁可以 同时用于左开门和右开门的场合，提高锁的通用性。
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