查询词典 energy conservation

Starting from the conditions of law of conservation of energy and angular momentum,how to deal with simple disposal of several physical equations of the planetary motion by applying the elementary mathematical equations is proposed.

从角动量和能量守恒定律出发，建立行星椭圆运动的轨道方程，导出行星运动时的各个物理量表达式，从而给出了一种以初等数学为基础的处理行星运动的简洁方法。

Considering enough first integrals,such as conservation of energy and angular momentum,the system is integrable by Liouville's theorem.

利用能量积分，根据惠特克定理对系统的动力学方程进行降阶，并根据旋转数给出系统作周期或准周期运动的判别条件。

In the teaching of central field, we should pay attention to turning the relative motion of two - body into one dimentuonal radial motion by introducing two physical concepts of reduced mass and effective potential energy, and we should also pay attention that the area law is the geometrical description of the conservation of angular momentum in the central field.

在有心力场教学中，应着重强调指出：通过引入折合质量和有效势能这两个物理量，把二体相对运动问题转化为单体沿径向的一维运动问题；以及面积定律是质心在有心力场中角动量守恒的几何描述。

Products of the Company one of its advantages: conservation of energy.

本公司产品其优点一：节约能源。

Conservation of matter and energy in the universe.

宇宙的物质和能量守恒。

And meanwhile, the conservation of mass, momentum and energy were discussed.

同时讨论此技术实施过程中伴随的质量、动量和能量守恒问题的解决办法。

More effective utilization and conservation of energy, raw materials, and natural conditions

更有效地利用和节约能源、原材料、以及利用自然条件

Conservation, College of Environmental and Energy Engineering,Beijing University of Technology,Beijing 100022,China

北京工业大学环境与能源工程学院，传热强化与过程节能教育部重点实验室，北京 100022

The conservation of energy does not require that a system be isolated.

能量的守恒并不要求系统必须是孤立的。

Energy balance能量平衡 Mass balance is straightforward, and refers to the principal of conservation of mass .

质量平衡是直截了当的，指的主要养护质量。

And Pharaoh spoke to Joseph, saying, Your father and your brothers have come to you.

47：5 法老对约瑟说，你父亲和你弟兄们到你这里来了。

Additionally, the approximate flattening of surface strip using lines linking midpoints on perpendicular lines between geodesic curves and the unconditional extreme value method are discussed.

提出了用测地线方程、曲面上两点间短程线来计算膜结构曲面测地线的方法，同时，采用测地线间垂线的中点连线和用无约束极值法进行空间条状曲面近似展开的分析。