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| 螺距直径比; 螺旋桨相对螺距 | |||
| 螺距-直径比; 节距比 | |||
| 螺距比 | |||
| pitch ratio: 20 phrases in 8 subjects |
| Agriculture | 1 |
| Automobiles | 1 |
| Aviation | 2 |
| Bridge construction | 1 |
| Earth sciences | 1 |
| Electric machinery | 8 |
| Electronics | 1 |
| Technology | 5 |
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