underwater gradient
... underwater driving 水底打桩 underwater gradient 水底坡度 underwater guide 水下引体 ...
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·2,447,543篇论文数据，部分数据来源于NoteExpress
结果表明，峰速不仅与水底坡度有关，而旦随水深的变化较相速复杂。
The results show that crest speed changes with the depth of waters far more complicatedly than the phase speed does:furthermore, it changes with the slope of the bottom.
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