- tip edge
- 齿顶: crest of thread; crown of a ...
- 边: side; section
- 棱边: edge; heel
- 齿顶: crest of thread; crown of a tooth; tooth crest; tooth point; tooth-tip; tooth top; addendum◇齿顶间隙 (gear) tip clearance; top clearance of tooth; 齿顶角 addendum angle (伞齿轮的); 齿顶啮合 [机械工程] addendum peak contact; 齿顶线 addendum line; face line of teeth; top line (of teeth); 齿顶圆 addendum [outside; point] circle
- 棱边, 斜边: seamed edge
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