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钻杆摩擦
| 系数
| 钻杆摩擦 | |
| tech. | rod drag |
| 系数 | |
| hydroel.st. | factor; parameter |
| met. | moduli; quotient; ratio |
| space | absorptance |
| sport. | index |
| sport. med. | constant |
| tech. | coefficient |
| |||
| rod drag (力) | |||
| 钻杆摩擦: 3 phrases in 2 subjects |
| Oil / petroleum | 1 |
| Technology | 2 |