结果表明，连续改变机床主轴转速时振动响应的最低点即为不发生颤振的稳定切削点。
The results show that the vibrational response varies regularly when the spindle speed is continuously changed from low to high.
结果表明，连续改变机床主轴转速时振动响应的最低点即为不发生颤振的稳定切削点。
The results show that the vibrational response varies regularly when the spindle speed is continuously changed from low to high. The lowest point of the response is the stable cutting point.
极限切深试验表明，以稳定切削点所对应的主轴转速进行切削可以提高机床的切削效率。
The experiments to verify the limit cutting depth show that the cutting efficiency of machine tool can be improved by cutting at the spindle speed corresponding to the stable cutting point.
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