The speed is based on the synchronous motor speed reduction ratio as a benchmark calculated by dividing the value of.
转速是以电动机的同步转速为基准除以减速比而算出的数值。
The primary drive gear(crankshaft gear)and the primary driven gear are the source of noise due to their high speed and bigger reduction ratio.
作为摩托车初级传动的曲轴齿轮及初级从动齿轮，由于转速高及降速比大，是产生噪声的主要因素。
These factors include ratio of upper and lower roll diameter , reduction ratio , enterance angle and roll rotation speed.
因素有上下轧辊直径比、压下率、导入角和轧辊转速。
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