Pulleys are on the market that permit an adjustment in the width of the groove. The effective pitch diameter of the pulley is thus varied, and moderate changes in the speed ratio can be secured.

带轮运行一定时间后，槽的宽度可以调节，这样带轮的节距是变化的，因此需要进行适当的调整以满足速度比的要求。

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The machining cost of barrel cam is decreased by improving the CNC programming method for milling of barrel cam, and the method can meet the request of cam groove width precision.

通过改进圆柱凸轮数控铣削加工编程方法，降低了圆柱凸轮的加工成本并能满足凸轮槽宽的高精度要求；

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The craftsman knife like a pen, with the decoration groove of the thickness, width and depth change, the pattern was true to life.

工匠运刀似笔，纹饰随着刻纹的粗细、宽窄、深浅变化，把图案表现得栩栩如生。

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Using the CMY color model (cyan, magenta and yellow) as its basis, the team was able to produce blues with a groove measuring 170 x 40 nanometers, reds at 60 nanometers wide and yellows at a width of 90 nanometers -- all with reflected sunlight and unaffected by viewing angles.

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