average displacement
| response spectrum
| average displacement | |
| dril. | 平均排量 |
| response spectra | |
| bridg.constr. | 反应谱 |
| response spectrum | |
| expl. | 响应谱 |
| hydroel.st. од. | 反应谱 |
| oil | 输出谱 |
| tech. | 反响谱 |
| |||
| 平均排量 | |||
| 平均位移 | |||
|
average displacement : 4 phrases in 2 subjects |
| Oil / petroleum | 3 |
| Technology | 1 |