 |
| |||
| American standard pipe (标定直径和厚度) | |||
| 美国标准 管: 22 phrases in 7 subjects |
| Automobiles | 3 |
| Aviation | 2 |
| Drilling | 1 |
| General | 7 |
| Mechanic engineering | 3 |
| Metallurgy | 4 |
| Technology | 2 |
|
| |||
| American standard pipe (标定直径和厚度) | |||
| 美国标准 管: 22 phrases in 7 subjects |
| Automobiles | 3 |
| Aviation | 2 |
| Drilling | 1 |
| General | 7 |
| Mechanic engineering | 3 |
| Metallurgy | 4 |
| Technology | 2 |