质量守恒定律 自然界的基本定律之一 law of conservation of mass 质量守恒定律一般指物质守恒定律（自然界的基本定律之一） Law of conservation of mass generally refers to the law of conservation of matter (one of the fundamental laws of nature) 拉瓦锡， 现代化学之父 Lavoisier ...
Imagination Is More Important Than Knowledge In 1931 the book “Cosmic Religion and Other Opinions and Aphorisms” by Albert Einstein was published. This volume contained the same saying, but the surrounding text was phrased somewhat differently: At times I feel certain I ...
因为在卡门涡街里游泳特别省力， 虹鳟还会主动寻找卡门涡街，比如流水中的大石头后面 。垂钓的人都知道，鳟鱼喜欢躲在石头后面 “ 歇脚 ” ，这个现象背后就是这个道理。 High Intermediate Reynold’s Numbers (50–200,000): With still larger objects or higher relative vel ...
In fluid dynamics, laminar flow is characterized by fluid particles following smooth paths in layers, with each layer moving smoothly past the adjacent layers with little or no mixing. At low velocities, the fluid tends to flow without lateral mixing, and adjacent layers slide past one ...
质量守恒定律 自然界的基本定律之一 【配精美图片】
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