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特殊用途圆锥的换算系数(摘自GB/T 1800.3-1998)
| 基本值 | 换算系数 | 基本值 | 换算系数 |
|---|---|---|---|
| 18°30′ | 0.3 | 01:18.8 | 1.8 |
| l1°54′ | 0.48 | 01:19.0 | 1.9 |
| 8°40′ | 0.66 | 01:19.2 | 1.92 |
| 7°40′ | 0.75 | 01:19.2 | 1.92 |
| 7:24 | 0.34 | 01:19.3 | 1.92 |
| 1:09 | 0.9 | l:19.264 | 1.92 |
| 01:12.3 | 1.2 | 01:19.9 | 1.99 |
| 01:13.0 | 1.3 | 01:20.0 | 2 |
| 01:15.7 | 1.57 | 01:20.0 | 2 |
| 01:16.7 | 1.67 | 01:20.3 | 2 |
