However, the sectional profile of groove and rake Angle are frequently prone to be below the mark even being rejected because of a large spiral Angle.

但若所加工的螺旋角较大，则易出现槽形和前角不符要求，乃至报废。

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The method is qualified for measurement of groove depth and duty cycle simultaneously for the rectangle-shaped or similar profile of holographic grating mask.

对于要求同时检测矩形或接近矩形槽形的全息光刻胶光栅掩模的槽深和占宽比，该方法完全适用。

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Tooth profile machining of mid-concave gear with narrow run-out groove is introduced, which solves a difficult problem using traditional machining.

介绍了工件退刀槽宽度小于机床退刀行程的内凹齿轮的齿形加工方法，解决了传统加工方法不易实现的难题之一。

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