至于对消息请求的响应，除了两个方向均有一个序列外，基本没有区别。
In the case of request response, there is very little difference, except that there is a sequence in each direction.
通过调整构件截面，使结构两个方向的刚度基本均匀。
By adjusting the sections of members, the rigidities of two directions are uniform basically.
当宽容是从两个方向的基本尺寸，它被称为双边公差。
When the tolerance is in both directions from the basic size, it is known as a bilateral tolerance.
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