permanent navigation lock
permanent navigation lock
永久航闸
以上为机器翻译结果，长、整句建议使用 人工翻译 。
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Temperature control measures for side wall concrete construction in the sixth lock head of the permanent navigation locks at the Three Gorges Project during hot season are briefly given in the paper.
简述了三峡工程永久船闸六闸首边墙混凝土高温季节施工的温控措施。
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