物质守恒定律

We derived an analytical expression of ion concentration distribution and the mathematical model of the induced polarization potential and the spontaneous potential for water bearing shaly sandstone from the conservation law of charge and the conservation law of matter.

由电荷守恒定律和物质守恒定律，推导出毛管中离子浓度分布的解析表达式，建立了描述含水泥质砂岩激发极化电位和自然电位的数学模型。

A material balance is based on the law of conservation of matter.

物质平衡是以物质守恒定律为基础的。

The processes of life must obey the law of conservation of matter and the two laws of thermodynamics.

生活的过程必须服从物质守恒定律和二个热力学定律。

Material eternal law and the law of conservation of energy is the great law of nature.

物质不灭定律和能量守恒定律，是自然界的伟大定律。

However, the Big Bang does not explain many things, including the uneven distribution of matter that results in "voids" and "clumps," or the retrograde motion that must violate the Law of Conservation of Angular Momentum.

然而，大爆炸并不能解释许多事实，包括物质分配不均，结果造成一些"虚空"和"实体"；而且"逆行运动"必然违反角动量守恒定律。

So called reservoir is physical or mathematical; for a physical system, the mathematical model is a system of partial differential equations with related initial and boundary value conditions, it can describe important physical process occurring in the system, for example, the process occurring in reservoir, which mainly concludes flow of fluids and transportation of mass, gravity、 viscosity、compressibility have effect to it; differential equations describing this process are obtained by combining Darcy law of every phase and its mass equilibrium in differential form.

这种模型是物理的或数学的；一个物理系统的数学模型，是偏微分方程组和适当的一组初、边值条件的总体，它能够描述在系统中发生的重要的物理过程，比如在油藏中发生的过程，主要是流体的流动和质量的转移，重力、粘滞力、压缩性等在流体流动过程中都是起作用的；描述这个过程的微分方程是由将各相达西定律和各该相的微分形式的物质守恒相结合而得到的。

Based on the theory of the conservation law of mass, the Darcy law and the conservation law of energy, the author designed a procedure using finite element method to calculate velocity field and temperature field of the Youjiang basin during the Yanshan period.

1以物质守恒定律、达西定律和能量守恒定律为理论依据，采用有限元数值计算方法，设计编制了计算地形驱动的流体流动和热传输的计算机程序，用来计算右江盆地燕山期地形驱动流体系统的速度场和温度场。

Law of conservation of matter and reason According to the law of conservation of matter and reason (law of conservation of mass and energy), matter cannot be created or destroyed, but is only to be found in transformation from one form to another.

物质不灭定律。&物质不灭定律&亦称&质能守恒定律&，一般表述为：物质不会凭空产生也不会消灭，只能从一种形式转变为另外的形式。

Models foe predicting how the discharge of conservative substance affects stream quality are invariably based on the law of conservation of mass, also referred to as the mass balance equation.

预言保守的物质的解除怎样影响溪的模型仇敌质量不变基于质量守恒定律，此外称为&质量平衡方程式&。

The cycle process of steam-water in drum, downcomer and water wall were simplified reasonably, according to the law of mass conservation and the law of energy conservation, the differential equation model of drum water level dynamic was constructed.

对汽包、下降管、水冷壁内汽水工质循环过程进行合理简化，依据物质及能量守恒定律，建立以微分方程形式描述的汽包水位动态模型。

I can not make it blossom and suits me

我不能让树为我开花

When temperatures are above approximately 80 °C discolouration of the raceways or rolling elements is a frequent feature.

当温度高于 80 °C 左右时，滚道或滚动元件褪色是很常见的特征。