动量守恒

A mathematical model that describes the transient flow is developed based on the conservation law of mass momentum and energy followed in the course of transient flow process of gasliquid phases.

根据气液瞬变流动过程中所遵循的质量、动量和能量守恒定律，建立了描述气液两相瞬变流动的数学模型。

Using the Conservation Law of mass, momentum, energy in the form of Euler and equation of the thermodynamics, the interaction between the shock wave and the wall surface of the excavation roadway during the gas explosion is discussed.

文章建立了瓦斯爆炸冲击波的管道物理模型，利用Euler形式的动量、质量、能量守恒方程和热力学方程从理论上解析了瓦斯爆炸过程中爆炸冲击波与掘进巷道壁面相互作用中正反射和斜反射时波阵面上的各个参数，并给出了计算公式和简化公式。

With the linear and angle momentum conversation, the system state equations for control are gained. And then Through the Lyapunov approach, the input law of the manipulator joint motion and control for work is received.

为此，以空间机器人系统的动量、动量矩守恒关系为基础，转化建立了控制系统设计所需的状态方程，并利用Lyapunov 直接方法，来获得满足任务要求的机械臂关节运动及控制输入规律。

Firstly, with the Lagrangian formulation and the relationship of the system linear, angular momentum conversations, the full-controlled dynamics equation of the system was derived.

由拉格朗日第二类方法及系统动量、动量矩守恒关系，建立了漂浮基空间机械臂完全能控形式的系统动力学方程。

Newton also built the first practical reflecting telescope and developed a theory of colour based on the observation that a prism decomposes white light into the many colours that form the visible spectrum.

在力学上，牛顿阐明了动量和角动量守恒的原理。在光学上，他发明了反射式望远镜，并基于对三棱镜将白光发散成可见光谱的观察，发展出了颜色理论。

The conservation laws of energy and momentum deduced by time and space symmetry is an universal law covering all physical fields.

由时空对称性导出的能量、动量等守恒定律，是跨越物理学各个领城的普遍法则。

Direct internal reforming solid oxide fuel cell is a complicated power system, whose mathematic model includes a set of partial differential equations that describe the species, mass, momentum and energy conservations, and the electrochemical model as well.

内重整固体氧化物燃料电池的数学模型由描述组分、质量、动量和能量守恒的偏微分方程组，以及电化学模型组成。

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。