tackle key problems
| in
| science and technology
| tackle key problem abbr. | |
| railw. | 攻关 |
| -in abbr. | |
| chem. | 碱; 因 |
| in abbr. | |
| gen. | 在 |
| meas.inst. | 英寸 的符号 |
| textile | 向内携裆 |
| in- abbr. | |
| anim.husb. | 不 |
| pref. | "在内"; "向内"; "非"; "无" |
| science and technology abbr. | |
| bridg.constr. | 科技 |
| el. | 科学 技术 |
| space | 科学与技术 |
| |||
| 攻关 | |||
|
tackle key problems : 1 phrase in 1 subject |
| Metallurgy | 1 |