| |||
截面常数 | |||
断面常数 |
section constant : 29 phrases in 10 subjects |
Architecture | 2 |
Aviation | 1 |
Bridge construction | 4 |
Electronics | 1 |
Engineering geology | 2 |
Hydroelectric power stations | 2 |
Information technology | 1 |
Oil / petroleum | 1 |
Shipbuilding | 1 |
Technology | 14 |