- 大端: main aspects; main features; ...
- 齿顶高: addendum; tooth addendum
- 小端齿顶高: i er addendum; inner addendum
- 齿顶高: [机械工程] addendum; tooth addendum [head]◇齿顶高修正 addendum correction [modification]
- 大端齿根高: outer dedendum
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