law of conservation of mass

1. 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。
2. This paper traces the establishment of law of mass conservation historically and probes into the application of law of mass conservation in junior middle school chemistry teaching.
   对质量守恒定律的建立进行历史追踪；探讨质量守恒定律在初中化学教学中的运用。
3. Then the writer gave a practical case of law of conservation of mass. The conclusion is that the learning mode of the new curriculum is useful not only in theory but also in practice, and it is popular with students.
   然后，给出了质量守恒定律一节的教学方案，通过实施得出结论：新课程学习方式不仅在理论上是可行的，在实践上也是行得通的而且是深受学生欢迎的。
4. According to the Newton's second law of motion, the law of conservation of mass, and Bingham plastic flow equation of slurry, as well as under top cement pulsation, the mathematical models of one dimensional pressure pulse propagation downwards in the cement column was established.
   文中根据牛顿定律、质量守恒定律及水泥浆的宾汉塑性流变性，在顶部水泥脉冲振动作用下，建立了水泥浆中，一维压力传播的波动方程的数学模型。
5. Law of Conservation of Mass in Junior Chemistry
   质量守恒定律在解题中的应用
6. 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。
7. 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。
8. According to the law of mass conservation, electric neutralization principle, infiltrate-surface renewal theory, as well as construction of GR, we built the dynamics mode of the simultaneity of the heat transfer and mass transfer in the GR purifying device.
   根据质量守恒定律、电中性原理、渗透&表面更新理论，及GR型净化装置的内部结构，建立了GR型净化装置热量传递、SO2传质过程同时进行的动力学模型，并与实际结果进行比较验证。
9. 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。
10. A qualitative explanation based on law of conservation of mass and energy theory of breaking and aggregating of bubble was made. An empirical correlation was presented on the base of experimental data, with average deviation of 6.3% and the maximum deviation of 20.8%.
    并根据质量守恒定理和气泡聚并的能量理论对以上结论做出了定性的解释，另外对实验数据进行了回归分析得到气含率的实验关联式，平均相对偏差为6.3%，最大偏差为20.8%。
11. According to the law of mass conservation the incremental mass density can be inferred from the divergency of the scalar unperturbed mass density and the vectorial displacement field.
    由质量守恒定律，质量密度增量来自未挠动的质量密度的散度和位移矢量场。
12. 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。
13. The law of conservation of mass is related to the first of the chemical laws in junior middle school. It runs through the whole process of chemistry learning in junior high school. It is a very important element.
    质量守恒定律是初中学生接触的第一个化学定律，并且始终贯穿于学生初高中的化学学习过程中，是中学化学教学中非常重要的内容。
14. Establish the mathematical model of various aspects of heating system based on the law of conservation of mass and energy, and then establish the simulation model of various aspects and the whole system by MATLAB/ SIMULINK tool.
    根据质量和能量守恒定律对供热系统的各环节建立了数学模型，然后运用MATLAB/SIMULINK工具建立各环节及整个系统的仿真模型。
15. According to the law of conservation of mass and energy, the device modules 'dynamic equations of hydraulic condition and thermal condition are deduced, and the mathematical model of device modules are built.
    依据质量守恒和能量守恒原理，推导各模块的水力特性、热力特性动态方程，建立模块的数学模型。

noun

1. a fundamental principle of classical physics that matter cannot be created or destroyed in an isolated system

   Synonym:    conservation of massconservation of matterlaw of conservation of matter