chord angle method
弦角法
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夹角余弦法 included angle cosine method
弦角弦长法 Chord angle and chord length method
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本文导出了法向弦长和公法线千分尺安置角的精确计算公式。
The exact computing formulas for the normal chord length and the set angle of the gear tooth micrometer callipers have been derived here.
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