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| 节圆齿距 (шестерни) | |||
| 分度圆齿距 (齿轮的); 节圆齿距 (齿轮); 节圆齿距齿轮的 | |||
| шаг по делительной окружности: 1 phrase in 1 subject |
| Technology | 1 |
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