提出了改善钢弦共振、固定弦以及老化处理的有效技术措施。
Also technical measuress of refining the wire resonance and fixing the wire and treatment of the aged wire are presented.
渐开线锥形齿轮由于同时存在锥度和螺旋角，使得其固定弦齿厚无法精确测量，也没有公法线。
There is no common normal in the conical involute gear and the fixed chordal tooth thickness can not be measured accurately because of the coexistence of helix angle and taper.
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