长江口及邻近水域
Chanajiang River estuary and adjaceat waters
changjiang estuary
Changjiang Estuary and adjacent sea
长江邻近水域
Yangtze River and adjacent waters
葛洲坝近坝段
river reach near Gezhouba
港口水域水声探测
underwater acoustic detection in port region
高位近水平钻孔
high location strike near-horizontal hole
积分渐近近似
asymptotic approximation of integral