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- Conservation of Mass . Conservation of Momentum. Stress Tensor. 质量守恒，动量守恒，应力张量。
- 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。
- 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。
- 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。
- Started the derivation of the momentum equations by applying the Reynolds Transport Theorem to the Lagrangian expression for conservation of mass. 向质量守恒方程的拉各朗日运算式中引入雷诺运输定理，来推导动量方程。
- Based on the conservation of mass flux, the theoretical equation of the centerlinedilution along the axis of jets in coflow ambient is developed.8. 7．从射流中物质输运通量守恒出发，推导出了适用于同向流动环境中紊动圆射流轴线稀释度沿程变化理论公式。
- Our community is a leader in the conservation of wildlife. 我们社区在野生动物保护方面走在前头。
- Taking the henhouse as semi-obturation system, dynamic conservation of NH3 in henhouse under ventilation condition was analyzed based on the law of conservation of mass. 摘要利用物质守恒原理，以鸡舍为半封闭系统，分析了鸡舍内NH3在通风状态下的动态守恒情况。
- Abstract Based on the fundamental conservation of mass, energy and momentum, a mathematical dynamic model of the 10 MW High-Temperature Gas-Cooled Reactor (HTR-10) was developed. 摘要 应用基本的质量、能量和动量守恒原理，建立了10 MW高温气冷堆的动态数学模型。
- Principles which contain conservation of mass and unalterable unstressed length for main cable and mechanical balance condition for saddles are elaborated in details. 具体阐述了悬索桥主缆无应力索长不变原理和质量守恒原理以及索鞍两侧力的平衡条件;
- Chemical reactions involve the exchange of atoms between reacting species under certain rules.The conservation of mass is among the most intrinsic ones. 化学反应包含着各物质之间按一定规则的原子交换。质量守恒是其中最基本的规则之一。
- 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。
- Who discovered the conservation of energy? 谁发现了能量守恒？
- A metric unit of mass equal to 100 grams. 百克公制质量单位，等于100克。
- Under the assumption of the constant temperature, pressure, smoke concentration within each layer and by using conservation of mass, energy, components and the state equation of the ideal gas, a multi-layer zone model is introduced. 通过假定每个水平控制层内的物理参数(如温度、压强、烟气浓度等)为均匀分布,并运用质量守恒原理、能量守恒原理、组分守恒方程以及理想气体状态方程,建立了一个可以获得火灾发展过程中温度和浓度垂向分布的多层区域模型。
- We build various dispersion relations for temporal,convective and absolute instability analysis from both liquid and gas phase conservation of mass and momentum. There are two modes of solutions:para sinuous and para varicose. 根据液体、气体的质量和动量守恒，推导出了Tem poral、Convective 和Absolute 不稳定雾化模型的各种特性方程，其解具有二种形式：para－sinuous和para－varicose。
- Based on the simultaneous solution of conservation of mass, momentum and energy, a homogeneous model and a separated two-fluid flow model have been developed for the single-loop pulsating heat pipes. 在对控制单元进行质量、动量和能量守恒分析的基础上，分别建立了适用于毛细管内气液两相流的均相和分相模型，并将其应用于脉动热管中。
- Based on the law of conservation of mass, the law of cause and effect and the inseparability of matter and reason, the law of conservation of matter and reason is proposed as an integrated discipline. “物质不灭定律”（质能守恒定律）举世公认，但事出必有因、无因亦无果。既然“物质不灭”，就该有不灭的原因、道理。能够论证“物理不灭定律”并用其造福人类、造福万物，是一件很开心的事情。
- Most people have come to accept the need for conservation of natural resources. 现在大多数人已认识到保护自然资源的必要。
- When heavy atoms are split in this way some loss of mass occurs. 当重原子这样被分裂的时候，就会发生质量的减少。
