基本条件

The main idea of the finite difference method is as follows: We consider the discrete difference equation with the finite alphas as approximate substitution for the differential equation with the continuous variant and boundary conditions.

有限差分方法的基本思想是用离散的，只含有有限个未知数的差分方程去近似代替连续变量的微分方程及边界条件，并把相应的差分方程解作为微分方程的近似解。

By analyzing principle, the investigating project was primarily determined. Then experiments of leaching with hot water, precipitation arsenic by lime milk, solution arsenic by sulfuric acid, reduction, cooling and crystalling white arsenic have been carried out and the optimum conditions of every step have been obtained.

在分析基本原理的基础上，初步确定了研究方案，按照方案分别进行了热水浸出、石灰乳沉砷、硫酸溶砷、还原、冷却结晶白砷等试验，得到了各个工序的最佳工艺条件。

Using tools in nonlinear H∞-control theory, it is shown that under mild conditions, the resulting closed loop system is locally asymptotically stable.

利用非线性H∞-控制一个基本结果证明了在较弱的条件下，所得到的闭环系统是局部渐近稳定的。

Atmosphere pressure almost has no effect on gas turbine efficiency and system net efficiency when atmosphere temperature is fixed.

在大气温度不变的条件下，大气压力对燃气轮机效率和系统净效率基本没有影响。

This article has analyzed from drives to travel the essential feature, to unify the Sichuan automatic pilot to tour in the development present situation and the development adverse condition, from drove the tourist market to Sichuan to carry on the analysis, and proposed the development strategy.

本文分析了自驾车旅游基本特点、结合四川自驾游发展现状及发展中的不利条件，对四川自驾车旅游市场进行了分析，并提出了发展策略。

In fact, be based on Baconian metric analysis, can reach merely a few laws that have strict and applicable requirement, and cannot reach forever run-of-mill proposition, also cannot confirm even or card bogus a basic theory.

事实上，基于归纳的计量分析，仅仅可以得出一些具有严格适用条件的规律，而永远无法得出一般性的命题，甚至也无法证实或证伪一个基本理论。

Comparing with other renewable energies, geothermal energy is stored underground and independent ofweather. It can be used both for base load and peak power.

地热能储存于地下，不受气候条件的影响，既可作为基本负荷能，也可作为峰值负荷能使用。

Classifying the system constraints as basic constraints and variable constraints,a model of flexible multibody with changing topologies is developed.

将系统约束分为基本约束和条件约束，建立了变拓扑结构柔性多体动力学模型。

The prospect for application of VRLA for electric bikes and the basie data under various operating conditions hate been described, and corresponding requirements on batteries presented.

描述了动力型阀控铅酸蓄电池在电动自行车上应用前景及各种运行状态下的基本数据，试述了动力型阀控铅酸蓄电池的技术要求和技术条件，同时阐述了动力型阀控铅酸蓄电池的动力性能与保护，为蓄电池厂与电动自行车厂的相互沟通提供了参考意见。

Thirdly, surrounding rock deformation and failure process of layered rock mass in high geo-stress was reappeared through the physical models with different dip angle of rock stratum, and the stress change and failure discipline in the direction of vertical to bedding plane was definitely determined.

根据共和隧道砂质页岩的力学性质，运用相似理论，构筑不同倾角层状岩体的物理模型，研究了高应力条件下层状岩体围岩应力变化及变形破坏过程特征，确定了层状岩体在垂直于层面方向上围岩应力变化规律及破坏形态，揭示了深埋隧道层状岩体的破坏机理；物理模型实验研究得到的围岩应力变化规律及破坏特征与数值模拟分析的结果基本一致，同时也验证了横观各向同性弹塑性本构模型的正确性。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。