conservation of mass

At the system level, it follows the first principles to keep the conservation of mass, energy, and momentum, respectively.

该方法在系统层面，采用传统的基于质量守恒、能量守恒、动量守恒的建模思路，保持模型的通用性。

Using the law of conservation of mass and energy, a nonlinear time delay control mathematical model is established by considering that the systems are composed of HVAC system, outdoor environmental temperature and moisture, architectural factors.

利用能量与质量守恒定律，通过建立包括通风、室内围护结构、户外环境条件等诸因素的非线性时延控制数学模型，给出了保证系统有唯一正平衡态及系统全局渐近稳定的充分条件。

This paper defines what the law of conservation of mass means and its application in Junior chemistry.

论述了质量守恒定律的内涵，及其在中学化学解题中的应用。

The modeling method is based on conservation of mass and gas law.

气体流量模型是根据质量守恒定律和理想气体方程对其建模。

The dynamic system model is coupled with geothermal heat exchanger model and heat pump unit model, which is based on the conservation of mass and energy.

采用确定性模型法建立了热泵机组的模型，然后通过能量和质量守衡方程式建立了系统动态耦合模型。

So, what's the conservation of mass if we divide by the atomic masses here?

那么质量守恒是什么呢？，如果我们在这儿按原子质量划分？

According to the law of conservation of mass, the mathematics model of Modified-Atmosphere Packaging ( MAP) is educed.

根据质量守恒定律和果蔬采后呼吸生理，推导出薄膜气调包装（MAP）的数学模型。

We write it subject to conservation of mass.

要服从质量守恒定律。

This is the story of wildlife conservation in the age of mass extinction.

也是个关于在大规模的物种灭绝时代如何保护野生动物的故事。

However, the original measurement data often contain various errors, so the basic balanced relations, such as energy balance or conservation of mass, cannot be satisfied.

但由于测量中不可避免的误差，测量值不能精确地符合生产过程中一些内在的物理和化学规律，如化学反应计量关系、物料平衡和热量平衡关系等等。

The time-averaged equations for conservation of mass, momentum, and energy are solved. A low Reynolds number k-ε model is used to simulate the turbulent transport.

选用低雷诺数k-ε模型模拟湍流传递；求解时间平均的质量守恒方程，动量守恒方程和能量守恒方程；

These are equations of local conservation of mass and the jump condition.

这些就是局部质量守恒方程和跃变条件.

Exercise. Conservation of Mass for a Particle Moving with High Velocity

高速运动粒子质量的守恒性

And according to the law of conservation of mass and energy, the ideal gas equation of state and the propeller works to establish a mathematical model of ship propulsion systems.

并根据质量和能量守恒定律及理想气体状态方程以及螺旋桨工作原理建立了船舶推进系统的数学模型。

By analyzing the principle of conservation of mass, we can get the continuity equation of coal containing gas.

通过质量守恒定律，分析得到含瓦斯煤岩的连续性方程。

Based on the conservation of mass and energy, applying the theories of transfer heat and pump, the paper gives the methods and process how to build the dynamics mathematical simulation model of feed-water system.

以质量和能量守恒定律为基础，应用传热学及泵的有关理论，建立了给水系统中除氧器、给水泵、小汽机、高压加热器等设备的动态数学模型。

Governing equations are available according to laws of conservation of mass, momentum and energy, which are general for unsteady flow and heat transfer in round pipelines.

通过质量守恒定律、动量守恒定律和能量守恒定律，推导出了热油管道不稳定过程变物性耦合流动的控制方程，该控制方程对于圆形管道内的非稳态流动与换热具有通用性。

Based on the conservation of mass, energy and chemical compositions, a model of seam-cavity growth is established to describe the process of underground coal gasification.

通过质量守恒、能量守恒和化学组分平衡描述了煤炭地下气化过程，建立了煤炭地下气化中燃空区煤层扩展的数学模型，根据试验条件进行数值求解。

Conservation of Mass. Conservation of Momentum. Stress Tensor.

3质量守恒,动量守恒, 应力张量.

This equation is the local equation of mass conservation of a species in solution.

这个方程就是溶液中一种组分的局部质量守恒方程.

It contains Euler equations for conservation of mass, momentum and energy, and Poisson equation through which the gravitational potential is determined by the density distribution of the gas itself.

它包括由质量守恒方程、动量守恒方程和能量守恒方程构成的Euler方程组以及由星体本身的密度分布决定的自引力势能所满足的Poisson方程。

Application of Fine Equilibrium and Conservation of Mass in Chemical Dynamics

试论细致平衡、质量守恒在化学动力学中的应用&从细致平衡、质量守恒看速率常数和平衡常数及基元反应总反应的关系

Law of conservation of mass!

质量守恒定律!

Under these conditions the conservation of energy is equivalent to the conservation of mass.

在这种条件下,能量守恒和质量守恒是相等的.

Based on the conservation of mass and conservation of energy and reasonable hypotheses for the dynamic thermal system, the dynamic simulation model of spray desuperheater was established using lumped parameters method.

根据质量守恒定律和能量守恒定律，经过合理的热动力学假设，采用集总参数的方法建立了喷水减温器的动态仿真模型。

The relationship between force and mass, velocity is reconsidered according to the law of conservation of energy;

主要讨论四个问题：根据能量守恒定律重新考虑力与质量、速度的关系；

Law of Conservation of Mass in Junior Chemistry

质量守恒定律在解题中的应用

We invoke Dalton's Law of molar proportions, we write it subject to conservation of mass.

我们援引了摩尔分数的道尔顿定律，要服从质量守恒定律。

According to the simulation method bring forward, the simultaneous equations of the conservation of mass equations, the dynamics equations of moving parts and the pressure wave equations in all boundaries are solved.

根据所提出的模拟计算方法编制了相应的仿真程序，联立求解了各边界处的质量守恒方程、运动件的运动方程和高压油管中的压力波动方程。

According to theory of basis seepage flow 、 conservation of mass 、 seepage flow equation of continuity, deduce seepage flow differential equation.

依据渗流基本理论、质量守恒定理、渗流连续方程从而推导渗流微分方程。