sliding scale
【机械工程，照明，加热，武器，爆破】滑动齿轮传动机构，控制离合器的齿轮
sliding gear mechanism, clutch-controlled gearing and gearing, pedestal gearing
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相关词条
sliding-scale basis
sliding scale price
lateral sliding flap
ground sliding, ball hooting
vertically sliding wing (vertically sliding sash)
self-aligning sliding-contact bearing
sliding-parity