| |||
等高面 | |||
液面 | |||
平坦的表面 | |||
水准面; 等位面 | |||
水平面 | |||
位势面; 等势面 |
level surface: 45 phrases in 11 subjects |
Agriculture | 1 |
Automobiles | 1 |
Aviation | 1 |
Desert science | 2 |
Electronics | 6 |
Engineering geology | 2 |
Explosives and Explosive Ordnance Disposal | 1 |
Nuclear and fusion power | 1 |
Semiconductors | 1 |
Space | 2 |
Technology | 27 |