According to characteristics of normal analysis of water quality in the country at present,the article applies thermodynamics theory and conservation of mass,considering with the example,determines the element as the format of some compounds with distributed quotient and calculates their compositions.
针对目前国内水质常规分析特点和水质评价的现状,运用热力学原理和质量守恒定律,结合实例,确定了地下水中元素以配位化合物的存在形式,并对各种配位化合物的组分进行了计算,这对水质评价有重要的价值,特别对一些有毒元素的评价更有实际意义。
A one-dimension flux model for the secondary settling tank based on the mass conservation;
基于质量守恒的二沉池一维通量模型
Based on the mass conservation law,this paper introduces a simple and feasible method for measuring hydrogen and oxygen stable isotopic concentration in soil water,which can avoid directly extracting soil water.
探讨一种简易可行的基于质量守恒原理的土壤水中氢氧稳定同位素测定方法,可避免直接提取土壤水,实验装置简单,费用低,适用于土壤含水量较高和结晶化合物含量低的土壤。
A tracer dilution physical model of measuring seepage velocity was reestablished according to tracer mass conservation,and a new formula of calculating the horizontal seepage velocity was given by infinitesimal method which modified the generalized dilution formula.
针对前人计算公式受诸多条件限制或存在不足之处,根据示踪剂质量守恒原理重新建立了示踪稀释物理模型,利用微元法推导了含水层水平流速计算新公式,修正了广义稀释定理,讨论了新公式与传统公式的内在联系,给出了实测数据的处理方法。
But the trace quality conservation is used to solve the problem.
本文试图从示踪剂质量守恒的角度建立新的广义示踪稀释物理模型中关于水平流速的计算方法,并建立相应的程序的关键部算法。
This paper infers, from the law of fine equilibrium and the law of conservation of mass, the relationship between rate constant of primary reaction and chemical equilibrium constant of general reaction and the relationship between primary reaction and general reaction.
依据细致平衡原理、质量守恒原理来推导基元反应的速率常数和总反应的化学平衡常数的关系以及基元反应总反应的关
Conservation of Mass. Conservation of Momentum. Stress Tensor.
质量守恒，动量守恒，应力张量。
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。
Derivation and solutions to the differential form of mass conservation equations.
质量守恒微分方程的推导解析和解答。
Estimation of water amount in river network of Taihu Lake based on isotopic mass conservation
利用同位素质量守恒原理估算太湖河网受水量
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。
Ac-cordling to the relationships of the erergy blalance and mose balance. We can also judge the relationship of the flow direction with the energy change.
根据能量平衡和质量守恒的关系,特别流动方向及能量变化关系。
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。
The principle of conservation of momentum holds whatever the nature of the internal forces, conservative or not.
动量守恒原理则不管内力的性质如何（保守的或非保守的）都能适用。
Lie symmetries and consered quantties of relativistic variable mass sys tem;
相对论性变质量系统的Lie对称性与守恒量
Conformal invariance and conserved quantity for holonomic mechanical systems with variable mass
变质量完整动力学系统的共形不变性与守恒量
This is in contradiction to caloric-theory notion of conservation of heat.
这种观点和热质论关于热量守恒的观念相矛盾。
The Investigation on Symmetry and Conserved Quantity of Discrete Constrained Dynamical System;
离散约束动力学系统的对称性质与守恒量研究
Almost Conserved Qualities of Modiefied Energy for the Initial Value Problem of the Kawahara Equations;
Kawahara方程初值问题修正能量的几乎守恒性质
Noether s theorem of nonholonomic systems of variable mass in event space;
事件空间中变质量非完整系统的守恒律
laws of conservation of energy and momentum
能量和动量守恒定律
The maintenance of a physical quantity, such as energy or mass, during a physical or chemical change.
守恒在物理或化学变化过程中能量或质量等物理数量的维持原状
conservation and conversion of energy
能量守恒和转换定律
Non-Noether conserved quantities for nonholonomic controllable mechanical systems with relativistic rotational variable mass
相对论性转动变质量非完整可控力学系统的非Noether守恒量
