The result shows that the spindle structure is more safe and suitable after optimizing, with less weight, better rigidness and higher critical speed.
分析结果表明，采用优化的主轴参数不但降低了主轴自重而且提高了主轴的刚度和临界转速，使主轴在结构方面更加合理、安全。
Likewise, permanent sediment layers are formed with the fixed conveying speed and a certain higher degree of mixing ratio which called as Critical mixing ratio.
同样输送速度一定，混合此高至使粉尘物料在管道底部形成永久性沉淀层时，这时的混合比即为临界混合比。
The critical rotational speed of multiple plate structure is up to one time higher than that of general structure.
与普通结构比较，多层结构的允许转速提高一倍多。
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