葛洲坝是世界上最大的内河船闸之一。
Gezhouba dam is one of the largest sluice gates on a inside river in the world.
雷州市南渡河船闸位于南渡河下游末端出海口处，地基为饱和淤泥质土。
The Nanduhe ship lock, lying at the end of river downstream and in the entrance of sea, is laid in the foundation of saturation muddy soil.
三河船闸建于1970年，经过三十多年的运行，混凝土表面出现碳化、裂缝和钢筋外露锈蚀。
After running for 30 years, carbonization, cracks and corrosion of steel have occurred on the surface of the concrete of Sanhe navigation lock which was built in 1970.
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