1.验湿器;水气计
2.深水望远镜,深水探视仪
3.水力测试器;压力测试器
1.an optical instrument constructed from a series of mirrors encased in a tube, used for observing objects deep beneath the surface of a body of water
1.Introduction of new hydroscope and its application to embankment monitoring
轻便新型核磁共振找水仪及其在堤坝监测中的应用