双条件的

Using the sectional force and torque balance method to consider the effects of load force and temperature,provides a more completeness and systematic mathematical model.The working characteristic of bimetal strip is expressed by equivalent network.

采用综合考虑负载作用力及温度影响的分析条形双金属片的截面力－力矩平衡法，给出了较完整系统的数学模型；将双金属片用等效网络表示，用网络分析手段求解温度继电器、热继电器的工作参数；分析了在比弯曲最大的条件下各层界面、表面应力关系。

This is usually implemented by combining the 'if' and else-if keywords where each statement is used with a separate conditional statement.

多数高级语言也支持双条件分支的一个略微更复杂些的实现。在这种实现中一个特殊的条件语句被两个代码块使用。

The model of full vector Galerkin finite element method with transparent boundary conditions is established.

建立了基于透明边界条件的全矢量迦辽金有限元法分析二维光子晶体光纤的模型，并对椭圆芯等5种高双折射光子晶体光纤基模的模式双折射、限制损耗及色散特性进行了数值分析和比较。

And pH7. 5 conditions were obtained and diffract X-rays to 2. 0〓 and 1. 8〓 resolution, respectively. Both crystals are isomorphous and belong to the space group P1; only one AB-heterodimer is in the whole unit cell.

在pH 6.5和7.5两种结晶条件下，AHP IX-bp的整体结构很相似，均方差仅为0.122 〓，但在pH 6.5条件的晶体结构中，His B61具有双重构象，这种结构的变化可能与AHP IX-bp活性的pH依赖性相关。

In this article, based on one-dimension Heisenberg model, the unsymmetric bilayer ferromagnetic and antiferromagnetic thin films are investigated by using the interface rescaling approach under nonperiodic boundary condition.

本文以海森伯模型为基础，只考虑最近邻相互作用，在计入外磁场和非周期性边界条件下，应用界面重参数化方法，分别研究了由A、B两层组成的铁磁或反铁磁层间耦合薄膜中的自旋双链系统的界面自旋波及其存在的充分必要条件，重点讨论了体各向异性场和自旋链长度对界面自旋波存在条件的影响。

The paper studies the optical properties of a magnet with tilted magnetic poles, calculates the focusing distance and principal plane of the 90° magnet and discusses the magnetic parameter satistying the respectively conditions of double focusing, stigmatic double focusing, maximum dispersion, minimum dispersion and zero dispersion.

本文推导了具有倾斜磁极磁铁的光学特性，计算了90°磁铁的焦距和主平面以及讨论了满足双聚焦、消象散双聚焦、最小色散、最大分辨率、零色散条件的磁铁参数。

The uniformity degree and rank of the population are given to measure the distribution and quality of the solutions in the population based on the characteristic. Using the uniform degree of the population as objective function and the rank as the constrained condition, the bi-objective optimization problem is transformed into a single objective constrained optimization problem. The computational equations of the charge and force exerted on the particles are presented.

针对这一特点，定义了种群的均匀度和序值，来度量种群中解的分布和质量，将双目标优化问题转化为以均匀度为目标函数，序值为约束条件的单目标优化问题；设计了双目标优化问题粒子的电荷和受力的计算公式，提出了一种新的类电磁算法求解问题。

The methods used here are proved be correct therefore are useful for the numerical simulation in unsteady incompressible flow with dual time step and preconditioning . Simulation to the sand saltation is carried.

文中所采用的双时间法的数值求解方法、边界条件的提法、差分格式的选取经验证是成功的，为双时间法与预处理方法的结合对低马赫数流动的数值计算积累了宝贵的经验。

The influence of microwave radiation on Ullmann reaction has been investigated by three Ullmann reactions, including triphenylamine formed by treating the diphenylamine with bromobenzene or Chlorobenzene which substitutes Iodobenzene; 4,4\'-dimethyltriphenylamine formed by treating 4,4\'-dimethyldiphenylamine with bromobenzene which substitutes Iodobenzene; 4,4\',4-trinitrotriphenylamine formed by treating 4-chloronitrobenzene with p-nitroaniline in this paper.

实验表明，在微波辐射条件下，顺式比反式迈克尔反应活性高；若在丁烯二酸的双键上引入甲基后，降低了进行迈克尔加成反应的活性；引入酯基对双键的影响比腈基有利于进行迈克尔反应，丙烯酸甲酯较丙烯腈的迈克尔反应活性高。

We selected 223 pairs of Rayleigh wave from 2681 waveforms recorded by 58 tations in the EuroAsia land and west pacific region. The fundamentalmode surface wave was separated using the phasematch for each seismograms. The fundamentalmode interstation attenuation coefficients γ was calculated using the twostation methods.

根据欧亚大陆及西太平洋地区58个数字地震台站2861个长周期波形记录，从中挑选出符合条件的223对经过中国大陆的双台路径记录，采用相匹配滤波和频率域维纳滤波相结合的方法，计算出双台之间的混合路径衰减系数。

If you are unfortunate enough to the lovelorn, please tell me, I will help you out, really, please contact me!

如果你不幸失恋了，请告诉我，我会帮助你摆脱困境，真的，请联系我啦！

China's plan to cut energy intensity by 20 percent and pollutant discharges by 10 percent between 2006 and 2010 is a case in point.

中国计划在2006年到2010间降低20%的能源强度和减少10%的主要污染物排放，就是一个这样的例子。