守恒

Combining the temperature distribution of wellbores with the temperature distribution of formations, we construct a closed and conservative equation group with initial and boundary conditions.

把井筒和地层的温度分布有机结合起来，建立起一个封闭的具有初边值条件的守恒的方程组系。

In a closed economic system, money is conserved.

在一个封闭的经济体系，货币是守恒的。

The numerical simulation is based on the fundamental hydrodynamic conservation equations including viscous effects for compressible fluid, coupled with the equation of state for water.

数值计算是基于包括粘性影响的可压缩流体基本守恒方程，并耦合了水的状态方程。

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 law of conservation and transformation of energy is the chief basis of engineering practice.

能量守恒和能量转换定律是工程实践的主要基础。

There is also no violation of the law of conservation of energy.

这根本就不违反能量守恒定律。

The law of conservation and transformation of energy is the chief basis of physical,astronomical and chemical reasoning

能量守恒和能量转换的定律，不仅是工程实践的主要根据，而且也是物理、天文以及化学等方面推理的主要根据。

This sweeping generalization is the law of conservation of energy.

这一透彻的概括就是能量守恒定律。

Chapter 5 is to study the group classification and the classification of conservation law for the nonlinear differential equations.

第五章主要研究非线性微分方程的群分类和守恒律分类。

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。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。