能量守恒

The temporal and spatial distributions of the plasma temperature during the dissipation process of lightning are calculated theoretically by applying the equation of motion,the equation of continuity and the equation of energy conservation of hydrostatics.

利用流体运动方程、连续性方程和能量守恒方程，对自然闪电回击后的消散过程建立数学模型，计算了等离子体温度随时间和空间的变化规律。

The truncation error of its local discrete energy conservation law is also exhibited.

用多辛Euler方法离散此方程组得到了它的多辛格式，并且推导了它的局部能量守恒律的离散误差。

We show a multi-symplectic scheme for the equations by the multi-symplectic Euler method. The truncation error of its local discrete energy conservation law is also exhibited.

用多辛Euler方法离散此方程组得到了它的多辛格式，并且推导了它的局部能量守恒律的离散误差。

The finite difference equation was built by using elemental energy balance of reinforced concrete beam with three surfaces exposing to fire based on the thermal properties of concrete. The influence of the physical or chemical reaction of free or combined water in concrete on the temperature field of concrete was considered by magnifying the specific heat of concrete.

根据三面受火钢筋混凝土梁离散体积单元的能量守恒原理，建立了有限差分平衡方程，在合理确定混凝土热工参数基础上，采用增大混凝土质量热容的方法，考虑混凝土中自由水与结合水的物理化学反应对混凝土温度场的影响。

In chapterⅣ, three problems in the velocity space are simulated numerically under the basic presumption that the distribution function is homogeneous in configuration space. The results of numerical simulations demonstrate that the conservation laws of momentum and energy are obeyed accurately.

第四章在"空间均匀分布"的前提下对三个速度空间中的问题作了数值模拟，数值模拟结果表明这种方法能够精确地保证动量及能量守恒。

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。

By introducing non-relativistic, adiabatic and quantum approximation to NLCMEs in the FBG with hyperbolic tangent apodization, and assuming the soliton as a particle with low velocity and invariant energy, the track equation of soliton is obtained.

利用双曲正切中间变迹光栅中的NLCME，引入非相对论-绝热-准量子近似法，将光栅孤子作为一个低速运动且能量守恒的整体进行分析，得到了孤子的轨迹方程。

The axial and bending characteristis models the of the pneumatic pressure artificial muscle actuator were set up according to the energy conservation law and the infinitesimal deformation theory respectively, and simulation researches and experiments had been done for the characteristics of the actuator.

论文基于能量守恒与转换定律及最小形变原理建立了空气压人工筋驱动器的轴向驱动力学模型及弯曲转向特性模型，仿真计算了人工筋驱动器的驱动力学特性及弯曲转响特性，通过实验研究对理论模型进行了实验验证。

In this thesis, by means of the principle of energy conservation, the small-signal transfer functions of interleave boost power factor correctors are derived. The transfer functions include the open-loop transfer function of interleave PFC and the transfer function of small-signal circuit with parasitic elements.

中文摘要本论文利用能量守恒定理推导交错式功率因数修正器(interleave power factor correctors)之等效电路模型，所推导的模型包括开路交错式功率因数修正器的小讯号等效电路以及含寄生元件效应之小讯号转移函数。

Invariance under translation in time leads to conservation of energy.

在时间平移下的不变性导致能量守恒。

In the United States, chronic alcoholism and hepatitis C are the most common ones.

在美国，慢性酒精中毒，肝炎是最常见的。

If you have any questions, you can contact me anytime.

如果有任何问题，你可以随时联系我。