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。
2
The pump flow evenly, smooth operation, low noise, high power operation pressure and volume ratiogear pumps, gear pumps than messy layout.
这种泵流量均匀、作业平稳、噪音小、作业压力和容积功率比齿轮泵高、布局比齿轮泵杂乱。
3
On load sharing condition, the planet-gear shows several advantages such as great transmission ratio, compact structure, high efficiency, large load capacity and drive steady.