守恒

It is shown that baryogenesis via leptogenesis occurs quite naturally, with a single phase (determined from neutrino oscillation data) appearing in leptonic asymmetry and in neutrinoless double beta decay.

而且能很自然地由轻子数破坏产生重子不对称的实验观测值。很有趣的是这类模型中出现在轻子不守恒和无中微子双beta衰变中的相位是一样的。

The formulas for calculating the bifurcation ratios and the way to determine the location of bifurcation point were presented.

进行血液动力学模拟和血液传热计算需要先建立血管网络，为此，借鉴强制结构优化方法，提出了基于分支法则、Poiseuille＇s law及质量守恒原则，直接在模拟区域上生成动脉血管树的新方法及相应的半径比计算公式和分支点确定步骤。

After achieving the solution of the mathematical model,a binomial productivity equation of gas-water well with two-phase flow in formation was derived in consideration of the influence of formation damage and non-Darcy effect,thus establishing the theory of transient inflow performance relationship curve of gas-water well.

文章基于质量守恒原理，建立了气水两相地层瞬态渗流的数学模型，通过定义气水两相拟压力函数，将渗流数学模型线性化，在获得数学模型解后，考虑地层损害和非达西效应的影响，推导出在地层中为水气两相渗流的气水同产井的二项式产能方程，从而建立了气水同产井瞬态流入动态关系曲线的理论。

In chapter III,bisection methods of conservation lawsare designed.

在上述方法的启发下，第三章设计了守恒律方程的二分法。

We employ the semi-classical Boltzmann\'s equation to govern the transport process of carriers and do the calculations on the emission rate and the capture rate.

对于发射率和俘获率的计算，主要考虑在粒子数守恒下，采用半经典的玻尔兹曼输运方程描述粒子输运的过程。

The magnesium borate whisker being a super property is a very good materials for reinforcement.

作为一个非常好的近似，这里的总能量是守恒的。

Based on the quality, momentum, and energy conservation laws and the state equation, considering the momentum loss of gas column flowing and the complicated thermal conduction mechanism in the bore-hole and formation, the pressure and temperature calculating method is derived for single-phase gas flow in different positions of the bore-hole.

文章以质量、动量和能量三大守恒方程和状态方程为基础，考虑了流动气柱的动能损失以及井筒和地层中复杂的传热机理，推导出计算单相气流在井筒不同部位压力和温度的方法。

Except Yuanqi , all things had form, boundary, sideand beginning and end.

他认为天地万物都是有形有象的，而作为宇宙本原的元气，则是无形无象的；宇宙间的具体事物都是有固定的属性，也要受到其他物的限制，而元气则是"混全之称"；一切具体事物都是有生有灭的，而元气则是无始无终、无生无灭的；元气的运动变化，聚散化生并不影响元气的总量，正如能量守恒定律一样；性也为元气所固有。

Using the calculation formula of reflection ecergy, transmissin energy and incidence energy and equivalent principle of electric signal received by detector and seismic wave energy reflected by underground lithologic boundary, the formula of interval velocity and strata density are derived.

根据运动学中的动量守恒定律、分析地震勘探过程中地震波在地下介质中的传播过程，利用反射能量、透射能量与入射能量的计算公式和检波器转化的电信号与地下密度界面反射地震波波动能量的效原理，推导出直接求层速度和层密度公式。

I of course include the usual formulas for solutions of the usual linear PDE, but also devote large amounts of exposition to energy methods within Sobolev space, to the calculus of variations, to conservation laws, etc.

当然，这本书中包含通常的线性偏微分方程的解的通常的表达式，并且对在索伯列夫空间中的能量估计，变量的计算，守恒律等进行了阐述。

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％。