| 1. | Safety is always the first consideration in tunnelling and speed of advance is the second .
在掘进中，安全总是应该首先考虑的问题，掘进速度则放在第二位。 |
| 2. | To get high rates of advance it is sometimes necessary to work on two, three or even four shifts a day .
为了取得高的掘进速度，有时有必要在一天内分两班、三班、甚至四班工作。 |
| 3. | Design and study improving road - header suitability
提高掘进机适应性的设计与研究 |
| 4. | Calculation of the operating power of s100 header
100型煤巷掘进机行走功率的计算 |
| 5. | Tunnelling machines - air locks - safety requirements
隧道掘进机.气闸.安全要求 |
| 6. | Example of development of cutterhead of shield machine
盾构掘进机刀盘研制实例 |
| 7. | Probing into gas control techniques in coal road drivage
煤巷掘进瓦斯治理技术探讨 |
| 8. | View on the oick distribution of the tunnel roadheader
对煤巷掘进机截齿分布的看法 |
| 9. | Tbm roadway ripping machine used in adit construction
岩巷掘进机在平峒施工中的运用 |
| 10. | Advancement of doorhead by full section descending slicing
下行分层全断面掘进马头门 |
