查询词典 difference equation

Then, the outturn table for poplar in Jiangsu has been constructed. By experiment on the poplar stand of different site- index, it shows that the equation fits the growth of poplar merchantable volume well, which can be used to estimate the yield of poplar stand in Jiangsu.

经对不同立地条件下的杨树林分出材量的估计实验，表明该方程适合江苏省杨树生长，为进一步编制全省杨树二元材种出材率表提供了理论与实验方法。

In chapter 4, the relation between Fatou components of a transcendental meromorphic function or a transcendental meromorphic solution of some differential equation and the set of singular values is discussed, the main considered question is the relation between wandering domains or Baker domains and the set of singular values.

第四章讨论了超越亚纯函数或微分方程超越亚纯解Fatou分支与奇值集的关系问题，主要是研究游荡域或Baker域与奇值集的关系，得到在一定条件下，某些超越亚纯函数的多连通游荡域以及某些微分方程超越亚纯解的Baker域必定含有奇值。

In Chapter 2,I consider a queuing system in which there are two exponential servers, each having his own queue, and arriving customers will join the two queues separately, and analyze the two-dimensional Markov process representing the numbers of jobs in the two stations. A functional equation for the generating function of the stationary distribution of this two-dimensional process is derived and solved through the theory of Riemann-Hilbert boundary value problems. In Chapter 3, I consider the system with two parallel queues, in which arrivals join the shorter queue.I describe the problem of coupling and show that the generating function Fcan be continued as a meromorphic function to the whole complex plane.

全文包括三大部分：第一章介绍了基本的背景、研究进展和文章主要采用的方法；第二章研究的是有两个服务员共享的简单的排队方式的模型，即每个服务员有各自的队列，两队队长互不相关，分析了代表两个队长的二维马尔柯夫过程，推导出了二维过程的平稳分布的母函数的方程，并运用Riemann—Hilbert边值问题理论解出了母函数的表达式；第三章研究的是JSQ-PS模型(the joining the shortest queue model with processor sharing)，模型是组合了加入最短队模型和处理器共享模型而成的有用排队模型。

Understanding your tolerance for risk is only half the equation. Here's the messier part: How much risk do you need to take?

了解自己的风险承受力仅仅完成了一半的工作，还有一个更难回答的问题：你需要承担多大的风险？

Determine with atomic spectrophotometer the plumbic content in sample of lacteal precious capsule, decide look, standard to lay in fluid to make up from sample metage, sample according to mathematical model, equation of regression of standard curve linear and repeat the calculation that measures 5 respects to undertake uncertainty of measurement.

用原子分光光度计测定乳珍胶囊样品中的铅含量，根据数学模型从样品称量、样品定容、标准储备液配制、标准曲线线性回归方程和重复测量5个方面进行测量不确定度的计算。

Software Description: About Metalogic Calculator, This calculator allows you to enter equations as you would write them on paper, and it solves equation step by step.

Metalogic Calculator 这个计算器软件允许你就像在纸上那样键入等式，并且可以按步骤对等式进行解答。

If the E=MC2 is right, the metamorphose equation M=E/C2 from E=MC2 is right too, Is it that light-speed can be accelerated to square of light-speed?

3/ 如果 E=MC2公式是对的，那么 E=MC2公式的变形 M=E/C2也应该是对的，这个公式能不能理解为巨大的能量在速度达到光速的平方时能创造物质？

Solving the model by characteristic curve method, two groups of characteristic curves and corresponding related equation are gained in high speedstates and low speedstates.

5采用特征线法对模型进行分析求解，在高速低密度区和低速高密度区分别得到了两组特征线和对应的特征关系式。

With these 3 bits of data and equation 2 a simple method for accurate comparison of different MOSFETs is developed.

有了这三个数据和方程2，就可以发展出一种准确比较不同MOSFET的简便方法。

A basic method of wave_number in three dimensions（MWN3D） is employed to solve the thermal conductive equation in this paper. Meantime, we take some numerical experiments to discuss the reliability and adaptability of this method.

给出了三维热导方程波数域的基本解和算法（MWN3D），并通过数值模型的方式验证、讨论了这一方法的可靠性和适应能力。

Objective:To explore the feasibility of laparoscopy in diagnosing and treating of abdominal diseases.

目的：探讨腹腔镜用以诊断腹部外科疾病及选择治疗方案的可行性。

The lifetime of nylon 1010 and nylon 1010/POSS composites decreased with increasing temperature.

热重-红外联用分析表明尼龙1010在氮气气氛下的降解产物主要为小分子的低聚物，POSS并不改变尼龙1010降解产物的组成。