| 1. | The air was removed from between the two pipes .
两根管子之间空气已抽出。 |
| 2. | The two pipes for the introduction of the hydrogen were fixed at the lower end of each balloon .
在每一个气球的下部都装上了两根输送氢气的管子。 |
| 3. | The air was removed from between the two pipes
两根管子之间的空气已经抽出 |
| 4. | Separate the two pipes by unscrewing them
松开螺丝把两根管子拆开。 |
| 5. | He joined up the two pipes
他把两个管子连接起来。 |
| 6. | The two pipes which connect with the sewer have been blocked up for a month
这两条与下水道相连的管子已经堵了一个月。 |
| 7. | The two pipes which connect with the sewer have been blocked up for a month
这两条与下水道相连的管子已经堵一个月了。 |
| 8. | Gas meter connections - part 1 : two pipes connection ; dvgw code of practice
煤气表连接件.第1部分:双管连接. dvgw实施规程 |
| 9. | Figure this to yourself citizen ; he shaved the sixty - three to - day , in less than two pipes
今天他两袋烟工夫不到就剃掉了六十三个头呢！ |
| 10. | Wafer - style held in place between two pipe flanges . easy to install but cannot be used as isolation valve
平板式（对夹式） ：固定在两个管道法兰之间。容易，但是不能作为隔断阀使用。 |
