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 ...
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 ...