您要查找的是不是：
- sonic echo depth finder 回声测深计
- sonic echo sounder (=sonic depth finder) 回声探测仪
- sonic echo sounder (=sonic depth finder 回声探测仪
- A trademark used for a sonic depth finder. 回音测深仪一种声音测深仪的商标
- A trademark used for a sonic depth finder 回音测深仪一种声音测深仪的商标
- Preliminary research on reservoir silt mud measurement by sonic depth finder with different frequencies 不同频率回声测深仪测量水库淤泥的初步研究
- Other fishermen use electronic depth finders to know how deep the water is. 有些钓客使用电子测深仪来探知水的深度，
- sonic depth finder 声深度观察装置,回声测深仪,回声测深器
- Priciple of building-up field depth finder by fixed field source 固定场源建场测深仪原理
- Manufacture and application of anti-slipping depth finder 弹片挂钩防滑骨孔测深器的研制与应用
- CHARACTERISTICS OF THE THEORETICAL SONIC ECHO TESTING CURVES OF DISCONNECTED PILES 断桩反射波法动测正演理论曲线特征的研究
- The money was returned intact by its finder. 钱原封未动地被捡拾者送还。
- Her performance was cheered to the echo. 她的表演获得长时间的喝采。
- This creature lives in the depth of the ocean. 这种生物生活在海洋深处。
- Lost: one diamond ring. Finder will be rewarded. 寻物: 遗失钻戒一枚，寻得者将获重酬。
- The bird-song is the echo of the morning light back from the earth. 鸟的歌声是曙光从大地反响过去的回声。
- His words aroused no echo in their hearts. 他的话未能在他们心中引起共鸣。
- I was out of my depth in that class. 在那个班里我跟不上。
- The young man dived to a depth of 40 feet. 那个青年人潜到四十尺的深度。
- We should discuss the problems in depth. 我们应该深入地讨论这些问题。
