中阶

The paper describes theory of beam noise reduction in adiabatically varying magnetic field, deduces the relation between magnetic field and noise , gives out fourth order Runge-Kutta formula of 2-order differential equation, simulates the effects of different magnetic field on electron motion, the results show good agreement with theory analysis,it confirms that adiabatically varying magnetic field near the cathode can reduce the beam noise.

文章描述了回旋波保护放大器电子束绝热降噪的机理，推导了噪声与磁场的关系和二阶微分方程的四阶精度龙格－库塔法求解电子运动方程的公式，编程计算了电子在不同磁场中的运动轨迹，模拟了不同磁场对电子运动的影响，模拟结果与理论分析相符合，证实了阴极表面附近的缓降磁场可以降低电子束的噪声。

In accordance with the functions of analytical solution and numerical solution for solving algebraical equation group,a design approach was introduced to conduct the pole placement of PI and PID controllers for first and second order controlled models using the symbolic operation.

利用符号运算，针对代数方程组求解的解析解功能和数值解功能，提出了1种对1阶被控对象和2阶被控对象模型进行PI控制器和PID控制器极点配置的设计方法，给出了相应控制器结构参数的解析解，并在算例中进行了数值仿真验证。

Value is lower, CEO's stock-based compensation significantly rise. Moreover, combining the results of the cash- and stock-based compensation contracts shows that when CEO is a risk averter and the product market is more competitive i.e.

在产品市场竞争程度与薪酬绩效敏感性方面，於高阶主管股票薪酬契约中，结果偏向支持「风险差异化假说」，显示当产品市场竞争程度愈大时，高阶主管较顾虑风险之考量，因而降低其股票薪酬与会计、市场绩效间之正关联性，此亦较符合Hart (1983)之理论研究。

In addition, nonlinear optical properties calculations reveal that the static first hyperpolarizabilities(β0) are greatly enhanced through the introduction of the carboxy group into the bpy ligand.

同时， 化合物非线性光学性质的计算结果表明，三种化合物均具有较大的一阶超极化率，联吡啶配体中吸电子基团的增加，使得分子内电子转移增强，导致一阶超极化率增大。

In this paper , we consider the Expanded Mixed Finite Element Method and mixed covolume method for the quasilinear parabolic integro-differential equation and quasilinear parabolic problem.

本文中我们采用扩展混合有限元方法和混合体积元方法数值模拟了二阶拟线性抛物型积分微分方程和二阶拟线性抛物问题。

It will analyze the first and the third order performance of conformal dome at first, and then go to study the application of diffractive elements in this kind of optical system, finally proposes a way to correct the variable aberrations by controlling the tilt and decenter of an symmetrical corrector. The results of simulation show that ways proposed above have improved the conformal dome's performance a lot.

为了将共形光学系统更好的应用于实际，本论文在系统的设计方法上做了多方面的研究：首先在对共形整流罩的一阶和三阶特性深入分析的基础上，研究了衍射元件在该系统中的应用潜力，然后提出了利用倾斜偏心元件进行动态像差补偿的设计方案，并用软件对上述设计方案进行了模拟验证。

This is not surprising, given the closer proximity of Pengyang to the Asian inland dust sources; The average content of calcium carbonateis of Pengyang section is not only higher than that of central loess plateau, but also higher the west of Chinese Loess Plateau, which reflected Pengyang loess had been deposited by near Liupanshan\'s substances that contained more calcium carbonateis; The content of diffluent element of 10m depth in the section increased fast, which indicated that the modern eluviation and the leaching depth of loess may be stronger than our guess; The soil growth index can reflect the intensity of soil forming and the climatic changes; The "abrupt chang" of glacial and interglacial period was caused by strong soil-forming processes that enlarged the discrepancy of granularity between loess and paleosol. However, the magnetic susceptibility nearly cannot reflect the existence of S_8 and the magnetic susceptibility of S_7 is highest in the whole section, which is inconsistent with other studies that S_5 has the highest magnetic susceptibility.Thin-section examination shows that the micro-texture of the soil layers is divided into both cementing texture in S_7, S_5 and S_1, and granular texture in all others.

与其它剖面相比，彭阳剖面粒度总体上要比东部的洛川、西安，甚至西部的兰州、新疆东湾要粗；CaCO_3平均含量不仅高于黄土高原中部，也高于高原西部，反映出本剖面富含碳酸盐的六盘山近源沉积起到了很重要的作用；易溶元素含量在剖面10m处快速升高，淀积特征明显，反映出黄土受现代淋溶成土作用影响较大，黄土直立、疏松、多孔特性和高温与多雨组合的气候特点，使得元素淋溶、淀积的强度和深度超出了传统的认识和判断；烧失量与其它指标相比，不仅能区分冰期、间冰期；而且能够区分出次一级的冰阶、间冰阶，有较高的分辨率；土壤发育指数、红度能够反映土壤强度差异，是反映气候波动的较好指标；然而，磁化率不能反映古土壤S_8的存在，且S_7的磁化率在全剖面中最高，这与大多剖面S_5磁化率最高的特点不一致。4。

In mathematical logic, predicate logic is the formal system of universal symbolic terms, such as first order logic, second order logic, many types of logic or infinitary logic ...

在数理逻辑中，谓词逻辑是符号形式系统的通用术语，比如一阶逻辑，二阶逻辑，多类逻辑或infinitary逻辑。。。。

It is well known that the Cartan form is nonunique for higher-order Lagrangian density, we find it was caused by higher-order mixed multiple integral in using Stokes formula in actually calculus variation.

众所周知，高阶Lagrangian对应的Cartan形式是不唯一的，在实际的变分计算中，我们发现Cartan形式的不唯一性是由利用Stokes公式求高阶混合多重积分的不唯一性引起的。

This method not only combines the best features of balanced truncation and singular perturbational method, but also reduces the possibility of physical un-realization of the reduced model obtained from generalized singular perturbation method, according to a parameter chosen in the model-order reduction process.

新算法在广义平衡奇异摄动法降阶过程中引入一个实参数代替矩阵，不仅集成了平衡截断法和奇异摄动法的优点，而且减少了计算量，大大缓解了利用广义奇异摄动法得到的低阶系统可能面临的无法实现的问题。

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。