| 1. | Neither of the underground installations was greatly affected by the blast .
上述两处地下装置均未受到爆震的严重影响。 |
| 2. | Practice for underground installation of thermoplastic pressure piping
热塑压力管地下安装惯例 |
| 3. | Practice for underground installation of thermoplastic pressure piping irrigation systems
热塑压力管道灌溉系统地下安装惯例 |
| 4. | Underground installation of polyvinyl chloride pressure pipe and fittings for water
水处理.输水用聚氯乙烯pvc压力管及配件的地下安装 |
| 5. | Thermoplastic and flexible metal pipework for underground installation at petrol filling stations
汽油加油站的地下装置用热塑柔性金属管道 |
| 6. | Thermoplastic and flexible metal pipework for underground installation at petrol filling stations
汽油加油站地下装置用热塑性和柔性金属管道 |
| 7. | Standard practice for underground installation of thermoplastic pressure piping irrigation systems
热塑性压力管道灌溉系统的地下安装标准规程 |
| 8. | Standard guide for underground installation of " fiberglass " glass - fiberreinforced thermosetting - resin pipe
玻璃纤维增强热固树脂管地下安装的标准指南 |
| 9. | Steel fixed site pressurized lpg tanks with jacket for underground installation ; dimensions , equipment
地下设备用带护套的钢制固定位置液化石油气压力容器 |
| 10. | The installation of pig receiver & launcher is divided into above ground installation and underground installation
收发球筒安装分地面安装及地下安装两种形式。 |
