In the below section, you will learn to create a key ring.
在下面的小节中，您将学习如何创建一个密匙环。
The outermost ring is the main residential section of the tulou.
最外面的一圈是土楼的住宅区。
Lei-ring structure of the cross-section, although different, but basically the same as sealing mechanism.
蕾形密封圈的截面结构虽不同，但密封机理基本一致。
Lei-ring structure of the cross-section, although different, but basically the same as sealing mechanism.
蕾形密封圈的截面结构虽不同，但密封机理基本一致。
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