固定低压电器时不应使电器受额外应力。
When fastening the apparatus, no extra stress should be added to it.
在金刚石面额外的坡口设计使得压力分散在更大面积上，这样加到切削齿上的应力也就更低。
The additional bevel on the diamond face of the cutter enables compression to spread across more area, leading to a lower stress gradient across the cutting edge.
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