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氢气泡法
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氢气泡法
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理学
流动显示
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hydrogen bubble method
氢气泡法
利用水电解原理,在作为阴极的细金属丝表面生成密集分布的细小氢气泡随水流一起运动,用来显示下游流动形态的水中常用的流动显示技术。
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second characteristic polynomial
second class of ordinal numbers
second comparison test
second complementary law
second component
second conjugate space
second contact
second control
second cosine formula
second cosine theorem
second cosmic velocity
second countability axiom
second countable space
second countable topological space
second Cousin problem
Second creation
second critical magnetic field
second cultivated machinery
second curvature
second demographic transition
second derivative
second derivative test
second derivative test discriminant
second development
second difference
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