bottom-hole coverage
| coefficient
| bottom hole coverage abbr. | |
| dril. | 钻头与井底接触面积; 钻头齿 对井底覆盖程度 |
| oil | 对井底覆盖程度 |
| bottom-hole coverage abbr. | |
| dril. | 井底覆盖 |
| coefficient abbr. | |
| gen. | 系 数 |
| avia. | 协同因素 |
| earth.sc. | 导数; 因素 |
| hydroel.st. | 常数 |
| interntl.trade. | 折算率 |
| radio.amat. | 系数 |
| space | 因数 |
| tech. | 率 |
| tech. од. | 系数 |
| |||
| 钻头与井底接触面积; 钻头齿圈对井底覆盖程度 | |||
| 对井底覆盖程度 | |||
| |||
| 井底覆盖 | |||
| 钻头与孔底接触面积 | |||
|
bottom-hole coverage : 4 phrases in 2 subjects |
| Drilling | 1 |
| Oil / petroleum | 3 |