 |
| |||
| 复合管线 | |||
| 复合水管 | |||
| 塑料衬里钢管; 复合［组合］管 | |||
| 有分叉的复式管道; 复合管 (道) | |||
| compound pipe: 16 phrases in 5 subjects |
| Drilling | 1 |
| Hydroelectric power stations | 1 |
| Oil / petroleum | 3 |
| Refrigeration | 1 |
| Technology | 10 |
|
| |||
| 复合管线 | |||
| 复合水管 | |||
| 塑料衬里钢管; 复合［组合］管 | |||
| 有分叉的复式管道; 复合管 (道) | |||
| compound pipe: 16 phrases in 5 subjects |
| Drilling | 1 |
| Hydroelectric power stations | 1 |
| Oil / petroleum | 3 |
| Refrigeration | 1 |
| Technology | 10 |