Interchangeable PARTS: use an interchangeable part for the internal region of the spring side.
互换部分：在弹簧内部区域使用互换零件。
An area in the communications region that is for the use of the related processor.
一个在通信范围之内的区域，供有关的处理机使用。
An area in the communications region that is for the use of the related processor.
一个在通信范围之内的区域，供有关的处理机使用。
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