这是我们第一次看到能量是如何涉及到守恒过程中。
This is the first time we see how energy is involved in the conservation process.
若没有外力，作用于系统整体，在碰撞过程中，动量就是守恒的。
And if there is no net external force on the system as a whole during the collisions, then momentum is conserved.
理论过程的模型是从第一原则得到的，这一原则利用物质和能量守恒以及基本法则来决定模型。
Models of theoretical processes are derived from first principles, using material and energy balances and fundamental laws to determine the model.
在可逆过程中，火积是守恒的，不发生热量传递能力的耗散。
In reversible process, there is the entranspy conservation, that is, no loss of capability of heat transport.
论述了应用最大熵原理及质量、动量和能量守恒定律到喷雾过程中，导出了液滴尺寸和速度分布规律。
This paper reports a derivation of distribution by applying maximum entropy principle and conservation laws of mass, momentum and energy to atomization process.
概念“守恒”是一个复杂的变化过程。
The "conservation" of concept is a complex and changeable process.
本文就静摩擦力做功以及在静摩擦力做功过程中机械能守恒问题，结合实例做进一步讨论。
A discussion is made of the work done by static frictional force and the conservation of mechanical energy in the work doing process by way of typical cases.
电荷不仅由衰变“前”到衰变“后”是守恒的，而且在衰变过程的每一个中间的阶段也都是守恒的。
The charge is conserved not only from "before" to " after " but also at every intermediate stage of the process.
根据合金凝固过程中的守恒定律和传输原理，建立了纤维增强二元铝合金的凝固模型。
The solidification model of fiber reinforced binary aluminum alloy was established according to the conservation law and the transfer principle of alloy solidification.
根据气体瞬变流动过程中所遵循的质量、动量和能量守恒定律建立描述气体瞬变流动的数学模型。
It constructs a mathematic model to describe gas transient flow according to the mass, momentum and energy conservation law.
在假定桩土接触面不产生滑移的条件下，确定在桩基础沉降过程中与能量守恒定律等效的位移协调方程，并在此基础上建立了一种新的单桩沉降计算方法。
Assuming no slippage occurred on the interface between pile and soil, an equivalent equation of displacement coordination is obtained to constitute a new method calculating settlement of single pile.
本文讨论了涂层材料在加热过程中出现的三层结构的吸热机理，建立不同层反映不同功能的守恒方程。
The thermal protection mechanism of three layer for coating material under heating process was discussed, the conservation equations which reflects difference function was established.
在数值计算过程中，采用了质量守恒和特殊的迭代求解格式以加快计算收敛速度和减少水量平衡误差。
In the process of computation a method based on mass conservation and a special iteration procedure are applied to accelerate the convergence speed and minimize the error of water balance.
根据凝固过程中的守恒原理，建立了铝基复合材料凝固过程的数学模型。
The solidification model of aluminum alloy composites was established according to the law of conservation.
介绍了动量守恒定律建立的历史过程，对动量守恒定律进行了讨论，并对动量守恒定律存在的内在实质作了探讨。
This paper introduces the history of conservation law of momentum, and discusses the conservation law of momentum and the substance of conservation law of momentum.
基于损伤力学理论，建立了沥青路面反射裂缝问题的损伤力学守恒积分，证明了在反射裂缝形成过程中应变能密度的守恒性。
The conservative integral of damage mechanics for the reflective cracking in asphalt pavements is established based on the elastic damage theory developed by the authors.
针对在机翼运动过程中网格的变形从而引起流场变量的变化，本文还使用了几何守恒法，以保证流场变量守恒。
In dealing with deforming grids as the wing moves, care need to exercise such that space conservation law is satisfied.
采用能量守恒原理估算了侵彻过程中平均减速度，与数值模拟结果一致性良好；
The rigid-body average deceleration is estimated using the law of conversation of energy, and it is in good agreement with numerical results.
采用能量守恒原理估算了侵彻过程中平均减速度，与数值模拟结果一致性良好；
The rigid-body average deceleration is estimated using the law of conversation of energy, and it is in good agreement with numerical results.
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