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。
The V belt wheels of noise experimental table of main carriage reduction gear must suit drive ratio, be lightest in weight and least in moment of inertia .
为降低轿车主减速器噪声测试试验台本底噪声，其传动系统采用了四对三角胶带传动。
Pressed and welded steel banjo housing, single reduction, hypoid gear, ratio 6.33:1.
冲压，焊接钢班卓琴住房，单减少，双曲面齿轮，比6.33：1。
Multi-purpose mini-motorcycle in the belt drive gear for the latter, the main, the size of the driven pulley reduction ratio sub-decision.
在微型摩托车多用皮带传动方式作后传动装置，主、从动皮带轮的大小决定次级减速比。
Multi-purpose mini-motorcycle in the belt drive gear for the latter, the main, the size of the driven pulley reduction ratio sub-decision.
在微型摩托车多用皮带传动方式作后传动装置，主、从动皮带轮的大小决定次级减速比。
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