查询词典 conservation

Conservation specialists at the hydrobiology institute, which is part of the Chinese Academy of Sciences, are preparing to search those waterways, pending approval from the Chinese Ministry of Agriculture.

归属于中国科学院的水生生物研究所的专家正准备对这一些水域进行考察，以待批准中国农业部。

Methods By using the theories of conservation of mass, of energy, Darcy's law and hydrokinetics, the mechanical model of oil layer fluid under the function of low frequency vibrated wave was studied. With the combination of indoor experiment and the numerical simulation, the effect of downhole low frequency vibration on oil viscosity, interfacial tension, capillary pressure, producing water cut and the rising velocity of it was studied quantitatively.

应用质量守恒定律、能量守恒定律、达西定律、流体动力学等基本原理研究了低频振动波作用下油层流体的数学模型，将室内实验和数值模拟技术相结合定量地研究了低频振动对原油私度、界面张力、毛管压力、产水率及产水率上升速度的影响。

This paper analyse the affect of difference water and soil conservation on hydrology environment and soil environment.

分析了水土保持建设对水文环境和土壤环境的影响及其研究动态。

Hydrostatics researches the mechanical rules when liquid is balancing. Hydrodynamics researches the mechanical rules when liquid is moving, include the relationship between the force that put on in liquid and quantum of physics, which represent liquid moving style, the rule of liquid moving characteristic and energy conservation and transform.

水静力学是研究液体处于平衡状态时的力学规律，水动力学是研究液体处于运动状态时，作用于液体上的力与表征运动状态的各种物理量之间的关系，以及液体的运动特性与能量守恒和转换的规律。

Their Physico-chemical anlysis and comparative test of humidity conservation and hygroscopicity and applied test are discribed.

进行了产品的理化分析、保湿性和吸湿性对比实验以及应用试验。

An important aspect of the theory of the nonlinear hyperbolic system of conservation laws is the existence of solutions. It helps to justify the appropriateness of the models.

关于非线性双曲型守恒律理论的一个重要方面是方程组解的存在性问题，它有助于我们分析对身边的自然现象建立的数学模型是否正确。

A L(superscript ∞) bound estimate is provided on the solutions of a semi-linear parabolic system by the theory of phase transitions. The existence of solutions of corresponding hyperbolic system of conservation laws is studied by viscosity methods and compensated compactness framework.

讨论来源于物理相变理论的一类半线性抛物型方程组解的一致L估计，该结果是利用粘性法和补偿列紧框架研究相应的双曲型守恒律解的存在性的重要内容。

A L∞bound estimate is provided on the solutions of a semi-linear parabolic system by the theory of phase transitions.The existence of solutions of corresponding hyperbolic system of conservation laws is studied by viscosity methods and compensated compactness framework.

讨论来源于物理相变理论的一类半线性抛物型方程组解的一致L∞估计，该结果是利用粘性法和补偿列紧框架研究相应的双曲型守恒律解的存在性的重要内容。

The research on numerical method for hyperbolic conservation laws is one of the important directions in computational mathematics.

中文摘要：双曲型守恒律方程数值方法的研究，是计算数学中的一个重要研究方向。

And many finite difference schemes have been widely used to solve hyperbolic conservation laws.

有限差分格式已经被广泛应用于守恒律方程的求解。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐