| 1. | Levelling is usually carried out with vertical drill holes .
整平爆破通常用垂直炮眼进行。 |
| 2. | The window was an embrasure in an enormously thick wall .
窗户是个炮眼，墙壁异乎寻常的厚。 |
| 3. | Before charging work is started, the drill holo is plugged .
开始装药以前，先将炮眼下端眼口堵死。 |
| 4. | All gun-ports were open and the muzzles peeped wickedly from them .
所有的炮眼大开，炮口凶狠地从炮眼里伸出来。 |
| 5. | The charge concentration in the contour holes should be as small as possible .
周边炮眼的装药集中度应当尽可能小一点。 |
| 6. | The detonator must be correctly fed into the drill bole during charging work .
在装药工作中，雷管必须正确地放进炮眼。 |
| 7. | All gun-ports were open and the muzzles peeped wickedly from them .
所有的炮眼都开着，炮口不怀好意地从炮眼里向外窥探。 |
| 8. | The plastic hose should have the correct external diameter in relation to the drill hole .
塑料软管的外径应该与炮眼直径相适应。 |
| 9. | The explosive from the lorry is delivered to the shot hole by means of a compressed air .
从卡车上直接用压缩空气将炸药装入炮眼。 |
| 10. | The fact that the drill hole openings are located under water complicates charging work .
炮眼口位于水下，无疑会使装药工作复杂化。 |
