查询词典 fractional replication

The fractional Fourier transform of partially coherent flat-topped beams is also studied.

同时，我们也研究了部分相干平顶光束的分数傅立叶变换。

The results show that we can conveniently control the intensity distribution of the partially coherent flat-topped beam by use of the fractional Fourier transform optical system.

结果表明，使用分数傅立叶变换，我们可以方便地控制部分相干平顶光束的光强分布。

Chapter one involves a survey of the fundamental knowledge and achievement obtained by foregoers on the subjects for the purpose of the later parts in this dissertation, including the introduction of the history and development of mathematics mechanization, brief review of the history and status in quo of the fractional calculus and soliton theory.

第一章介绍了论文的基础知识以及前人工作的成果：包括介绍数学机械化的思想与应用的情况；回顾分数微积分的历史和所应用的领域；简单介绍孤立子研究的历史、发展与成果。

We also calculated the fractional volume expired during the first 15% of Te (Vex fract,15) and compared those variables to full expiratory VT for each of the 3 obstructions.

我们还计算了第一个15%呼气时间所占的呼气量分数(Vex fract，15)并比较了三种梗阻程度的变化与完整呼气潮气量。

The average current in every phase is obtained by means of Pulse Width Modulation, frorn which becomes the composed vector, and the driving on fractional step angle of stepmotor can be realized.

从而构成合成矢量，实现分数步进角的驱动。实验结果表明，其转角精度高于任何数字编码器的分辨率，极大地提高了步进电机的伺服精度。

Rice mill industry is the important component of our national provision Industry. Rice mill is one of the master machines of the art factitious machine. The output are required that the rice surface is ganoids, the fractional rice、rice bran 、rice sugar and grain is the minimum, the machine are required highly efficiency.

碾米工业是我国粮油工业的重要组成部分，碾米机械作为粮食加工机械中的主要机械之一，对产品的要求主要是加工出的成品米表面光洁、碎米少、含糖、含糠、含谷量低，出米率高、电耗低以及安全、可靠耐用等。

The results show that the crystal grain of nanometer ZrO2 loading CuO and ZnO which are prepared by fractional precipitation method are less than 20 nm as a shape of sphericity or ellipsoidal, and the nanometer ZnO/ZrO2 grain glomerates intensively.

结果表明，分步沉淀法制得的担载CuO和ZnO的ZrO2基纳米粉体的晶粒小于20mm，形貌多为球形或椭球形状，其中ZnO／ZrO2纳米粉体晶粒间有较大的团聚现象。

Application and analysis of data from randomized blocks designs, Latin and Greco-Latin squares, incomplete blocks designs, split-plot and repeated measures, factorial and fractional replicates, response surface experiments.

随机区组设计数据的分析和应用，拉丁方和希腊拉丁方，不完整的区组设计，裂区设计和重复测量设计，析因和部分重复，反应曲面试验。

Low-boiling phenols in low-temperature coal tar are important chemical raw materials. For the identification and determination of the individual phenol boiling below 210℃ in the low temperature coal tar, the methods of gas chromatography, liquid-liquid chromatography followed by ultra-violet analysis and fractional distillation followed by infrared analysis were evaluated and compared.

随着煤炼油工业的发展，煤焦油中的酚类，特别是低級酚，作为化工原料的利用很重要，我們应用(1)气液色譜法，(2)液液色譜与紫外光譜法結合及(3)精餾与紅外光譜法結合三种不同方法对210°以前的低級酚进行了各种异构体的成分分析，比較分析結果：三种方法对同一样品进行分析时，最大絕对誤差在2％以内，其中以气液色譜法最为快速，液液色譜法次之，精餾-紅外光譜法費时間較多；但后二种方法所得数据較完全。

Three MERIS FR Level 1b scenes acquired over The Netherlands in April,July and August 2003 were used to derive fractional composition of the main land cover types present in The Netherlands.

利用4月、7月和8月三期MERIS FR1b级数据得到荷兰主要土地覆被类型的组成权重。

According to our present broadcasting situation,the thesis proposes using new technology to update and reform the present HFC. It also suggests broadcasting using self-advantage and arranging EPON in order to win the supermarket.

论文从我国广电的现状出发，结合实际，积极倡导采用新技术更新、改造我国现有的HFC网络；倡导广电现阶段利用自身优势，部署EPON网络来赢取市场。

A new general kinetic equation was derived in which the effect of the removal of condensation water was taken into account completely, and was applied to the polyesterification kinetic study of AA/HPHP and AA/NPG. It was found that the reaction order of self-catalyzed polyesterification was not constant. For these polyesterifications, the reaction order was 2.5 at a low temperature, while 3.0 at a high temperature.

考虑缩合水的排除对反应体系的影响，用体积浓度单位推导出一个新的聚酯反应总包动力学方程，并应用到AA/HPHP和AA/NPG两个聚酯化反应的动力学研究中，研究发现，自催化聚酯反应的反应级数并不是固定值，对于AA/HPHP和AA/NPG两个聚酯化反应而言，低温时反应级数为2.5，高温时反应级数为3.0。