本文简述了长江口水域实施大口径玻璃钢管水下安装施工工艺。
This paper introduces the construction technology of underwater installation of large-caliber GRP pipe in the Yangtze Estuary Area.
长江口北槽口外水域是长江口水下三角洲的组成部分，是长江口深水航道外航道出口段的所在区域。
The water area outside of North Passage is part of the submerged delta in Changjiang estuary, and there is the outlet of the outer navigation channel in North Passage.
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