种差

Using the similar single-difference mathematical model which is base on the character of GPS landslip monitoring to gain the distortion of the coast by dissolving at single epoch, can avoid the delicacy problem of the jumpiness detection and repair.

根据高精度GPS滑坡监测的特点建立的单历元直接解算监测点滑坡变形信息的似单差模型，避免了周跳的探测与修复这一棘手问题；双差模糊度的解算变得更为容易；避免了网平差这一环节，有利于提高数据处理的响应速度；同时，该模型可适用于静态监测和动态监测两种监测模式。

This paper presents an efficient approach of designing a special dome and its aberration corrector, using the method of Wassermann-Wolf differential equations to generate the optimum contour of the corrector through a macro in CODE V. This corrector reduces spherical aberration and coma which are introduced by the dome and improves the imaging quality of the system.

本文提出了一种有效的特殊整流罩及其像差校正器的设计方法，运用Wassermann-Wolf微分方程组的原理，通过在CODE V中编译宏程序曲面拟合的方法得到校正器最佳面形，从而可以校正整流罩引入的球差、彗差，使系统成像质量得到较大的改善。

At present,the hybridization of Differential Evolution with local search method confines to DE with a crossover based local search method.A novel differential evolution algorithm with best-individual based Local Search strategy is proposed.In LSDE,a normal distribution operator is introduced to automatically modify search length,and time-varying factors are introduced to modify the two parameters of DE.

针对目前差分进化与局部搜索相结合仅局限于基于交叉的局部搜索的方法，提出了一种基于最佳个体局部搜索策略的差分进化算法，并引入正态分布算子自动调整搜索步长和时变差分进化因子调整DE的两个参数。

In a Word, I was so prepossess'd against my going by Sea at all, except from Calais to Dover, that I resolv'd to travel all the Way by Land; which as I was not in Haste, and did not value the Charge, was by much the pleasanter Way; and to make it more so, my old Captain brought an English Gentleman, the Son of a Merchant in Lisbon, who was willing to travel with me: After which, we pick'd up two more English Merchants also, and two young Portuguese Gentlemen, the last going to Paris only; so that we were in all six of us, and five Servants; the two Merchants and the two Portuguese, contenting themselves with one Servant, between two, to save the Charge; and as for me, I got an English Sailor to travel with me as a Servant, besides my Man Friday, who was too much a Stranger to be capable of supplying the Place of a Servant on the Road.

总之，我不想走海路已成了一种先入为主的想法，怎么也无法改变了；唯一我愿意坐船的一段路，就是从加来到多佛尔这段海路。现在，我既不想急于赶路，又不在乎花钱，所以就决定全部走陆路，而且陆上旅行实在也是很愉快的。为了使这次旅行更愉快，我的老船长又给我找了一位英国绅士为伴。此人是在里斯本的一位商人的儿子，他表示愿意和我结伴同行。后来我们又找到了两位英国商人和两位葡萄牙绅士，不过两位葡萄牙绅士的目的地是巴黎。这样，我们现在一共有六个旅伴和五个仆人；那两位英国商人和两位葡萄牙绅士为了节省开支，各共用一个听差。而我除了星期五之外，又找了一个英国水手当我路上的听差，因为星期五在这异乡客地，难以担当听差的职务。

Based on the Seidel sums formulae of thin lens, four types of NIM thin lenses free from partial primary aberrations are designed with specific parameters and given redundant aberration coefficients.

通过对单块负折射率介质薄透镜的像差特性分析，我们提出了四种只有利用到负折射率介质才具备的可消除部分初级像差的单块薄透镜系统，并给出了相关的系统结构参数和冗余的初级像差表达式。

The residual is generated with the method based on mathematical model and an improved sequential probability ratio test is put forward for failure detection to decrease the time used for residual-judge.

用基于模型的方法获取故障状态下的系统残差，并用一种改进的时序概率比检验进行残差判决，缩短了残差判决的时间。

A grating function and a groove function are introduced to determine the structure of a concave grating. Basic ideas for the design of a flat-field concave grating with three stigmatic points are proposed. As a proof of the usefulness of these design approaches, image conditions of the grating with three stigmatic points are developed which concise with other published results and they are more general than those obtained from holographic gratings.

采用与分析三维光栅相类似的级数展开法给出了二维集成凹面光栅的球差、彗差的计算方法，计算中用光栅函数和槽面函数来描述具有任意形状和任意变化周期的光栅，提出了一种具有三个无像差点的平面场型凹面光栅的设计方法，利用该方法推导了三点无像差光栅的成像条件，与文献中用其它方法获得的结果相一致，该结果与全息光栅的成像条件相比，更具一般性。

But it suffers from the following two shortcomings:(1) the object detected by instantaneous difference is inherently interfered by "virtual shadow" noise;(2) the interior detection of an object might be partly lost whenever the grey scale is quite uniform.

文章提出基于两次差分之间相关性的"复合差分法"，实现了对"虚影"的消除，并提出一种判定最优差分间隔的策略，减少了目标漏检，使目标检测的完整性得到了显著提高。

The Schematic diagram of the aberrometer and the flow charts of program are illustrated.

本文详细介绍了一种新型主观式波前像差仪的工作原理，具体地阐述了主观式波前像差仪的光路控制系统、瞳孔自动跟踪系统以及计算机软件控制系统，并给出了像差仪的结构原理图以及程序控制流程图。

Rough error processing that frequently used to digital filtering was taken as the research object,on the basis of difference method commonly used in the past and profile method of fractile method,a synthesis algorithm-fractile method based on difference method was proposed.The algorithm for processing the rough error data was perfected .The method had been used in a detection system and result is satisfactory.

对数字滤波系统中经常使用的数据处理算法做了综合处理，对于数据采集过程中所得数据做粗差判断处理为主要研究对象，在过去常用的差分法和分位数分布图法的基础上提出了一种综合处理方法-基于差分法的分位数方法，对系统中的粗差数据处理算法做了更完善的探讨，该方法已在实际检测系统中应用，效果显著。

Chrysanthemum of 10 thousand birthday is lax to edaphic requirement, with the arenaceous qualitative loam with fecund, good drainage had better.

万寿菊对土壤要求不严，以肥沃。排水良好的砂质壤土为好。

He unstepped the mast and furled the sail and tied it.

他拔下桅杆，把帆卷起，系住。