The paper expounds on the results of testing and study of the semi-circular caisson structure for the first and second phases of the south and north training jetties for the regulation of the deepwater waterways in the Changjiang Estuary.是什么意思_The paper expounds on the results of testing and study of the semi-circular caisson structure for the first and second phases of the south and north training jetties for the regulation of the deepwater waterways in the Changjiang Estuary.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句