这就是键轴，它就是两个原子核之间的轴。
So that is the bond axis it's just the axis between the two nuclei.
以及对设计的轴及齿轮进行强度较核，符合设计的要求。
And the design of the shaft and gears intensity of nuclear, with the design requirements.
以及对设计的轴及齿轮进行强度较核，符合设计的要求。
And the design of the shaft and gears intensity of nuclear, with the design requirements.
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