first break
| refraction method
| first break | |
| anim.husb. | 第一道皮磨; 头道皮磨; 头道粉碎 |
| eng.geol. | 初至时间 |
| geophys. | 初至 |
| oil | 初至波 |
| tech. | 波的初至 |
| refraction method | |
| expl. | 折射波法地震勘探 |
| oil | 折射勘探法 |
| soil. | 屈折法 |
| |||
| 第一道皮磨; 头道皮磨; 头道粉碎系统 | |||
| 初至时间 | |||
| 初至 | |||
| 初至波 | |||
| 波的初至 | |||
| 织物样品初期变色 | |||
|
first break : 11 phrases in 5 subjects |
| Electronics | 1 |
| Football | 1 |
| Oil / petroleum | 4 |
| Technology | 3 |
| Volleyball | 2 |