... 减速凸轮长度 Length of deceleration cam 节距设置 Pitch setting 锯齿形50级刻度盘 Serrated 50-step scale ...
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pitch setting lever 螺距装定杆
Pitch setting range 间距设定范围
low-pitch setting 低距调定
positive pitch setting 正桨距位置
manual pitch setting facility 手动调距装置
Array pitch with digital setting 排距以数字设定
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