1. The critical velocity, or critical Froude number criterion has long been accepted as a means of determining frazil jam profiles.
长期以来,人们一直用临界流速或临界佛汝德数的准则来确定冰塞的演变。
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2. Ice jam flood: a lot of frazil ices and crushed ices gather under the covering ice, causing heading up of water level of upper reach.
冰塞洪水,大量冰花与碎冰在盖面冰下集聚,造成上游水位显著壅高的现象。
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3. Later that afternoon I went to another lecture, about ice, in all its varieties: frazil, grease, brash, shuga, pancake, white, drift, rafting and fast.
4. Later that afternoon I went to another lecture, about ice, in all its varieties: frazil, grease, brash, shuga, pancake, white, drift, rafting and fast.