average angle
| method
| average angle | |
| dril. | 平均井斜角 |
| method | |
| gen. | 法; 标准; 水平 |
| environ. | 方法 |
| hydroel.st. од. | 方法 |
| mech. | 电火花法 |
| |||
| 平均井斜角 | |||
| 平均角 | |||
|
average angle : 5 phrases in 4 subjects |
| Bridge construction | 1 |
| Drilling | 1 |
| Oil / petroleum | 2 |
| Technology | 1 |