concrete proportioning
| by
| trial method
| concrete proportioning | |
| hydroel.st. | 混凝土配合 |
| by | |
| gen. | 靠; 被; 在…旁; 在 旁边; 沿; 经 过 |
| trial method | |
| agric. water.suppl. | 试验法; 反复试验 |
| auto. | 试探法 |
| hydroel.st. | 试算法 |
| oil | 尝试法 |
| |||
| 混凝土配合 | |||
| 混凝土配合 (比) | |||
|
concrete proportioning : 9 phrases in 4 subjects |
| Bridge construction | 1 |
| Electronics | 1 |
| Metallurgy | 1 |
| Technology | 6 |