下游河床

摘要简要介绍我国第一台步履式水下基床整平机的基本结构、系统组成、适用条件、主要技术参数和施工工艺，并对其在长江口深水航道治理过程中进行基床整平的实际施工质量和工效作了说明。

self-contained underwater breathing apparatus, SCUBA

underwater vessel

air pistol adapted for underwater use

underwater applicable anti-fouling paint

underwater

underwater exhaust ship (vessel)

underwater performance

underwater medicine