| 1. | Ships and marine technology - marine echo - sounding equipment 船舶和海上技术.水声设备 |
| 2. | General specification for echo - sounding equipment in ships 船用回声测深设备通用技术条件 |
| 3. | Ships and marine technology - marine echo - sounding equipment 船舶和海洋技术.海上回声探测设备 |
| 4. | So was born the echo - sounding apparatus now in general use in ships 这就是目前在船上普遍使用的回声设备的原理。 |
| 5. | So was born the echo - sounding apparatus , now in general use in ships 目前船舶上普遍应用的回声探测仪就是这样产生的。 |
| 6. | So was born the echo - sounding apparatus , now in general use in ships 这样就产生了目前各种船舶上普遍应用的回声探测仪。 |
| 7. | Echo - sounding receiver 回声测深接收机 |
| 8. | Echo - sounding instrument 回声测深仪 |
| 9. | Echo - sounding device 回声侧深仪 |
| 10. | Iso 9875 : 2000 ships and marine technology - marine echo - sounding equipment iso 9875 : 2000 ; german version en iso 9875 : 2001 船舶和航海技术.海上用回声探测设备 |