 |
| |||
| 钢棒丝间隙量规; 圆柱塞规; 圆形仪表; 表盘指示器 | |||
| round gauge: 4 phrases in 3 subjects |
| Hydroelectric power stations | 1 |
| Oil / petroleum | 1 |
| Technology | 2 |
|
| |||
| 钢棒丝间隙量规; 圆柱塞规; 圆形仪表; 表盘指示器 | |||
| round gauge: 4 phrases in 3 subjects |
| Hydroelectric power stations | 1 |
| Oil / petroleum | 1 |
| Technology | 2 |