查询词典 orthogonal

Begin from the chapter three, this text expound the fact of the algorithms that the channel estimation mainly, first of all, this text has been introduced and the important function of the channel estimation algorithm of Orthogonal Frequency Division Multiplexing ,on this basis, this text Introduce the detailed introduction of the channel estimation algorithm, also essentialing structure.

从第三章开始，本文主要论述了信道估计的算法。

The effects of the water dosage, pH value and alkalify mode in the preparation process on the photocatalytic activity of TiO2 were examined, and the optimum preparation conditions were also determined by orthogonal design.

制备过程中的加水量、pH值和加碱方式对TiO2光催化活性有影响，通过正交实验确定了TiO2的最优的制备条件。

Methods: from prepation of crude drug as start, study the technology of extract and defat with L9 (3~4) orthogonal test. With EtOH extraction and water sed, alkali washing, EtOAC extraction as main methods of eliminate dopant. Finally with alky AlzO3 chromatographic column, rich and gain anticancer active site. The maximum response was achieved at a 40 min extracting time with 10 times volume 90% EtOH added to the sample for the first time and 30 min for the second time. Adding 10 times water will produce precipitation; Place the precipitation into 6 times petroleum benzin to de-fat at 60℃.

云南红豆杉中抗癌活性物制备工艺研究方法：利用正交设计试验L9(3~4)确定原料药提取工艺为：10倍量90％乙醇提取两次，第一次40分钟，第二次30分钟；醇提液用10倍量水沉；沉淀加6倍量石油醚40℃脱脂；用1mol／L的NaOH溶液碱洗，除去酸性杂质；以碱性氧化铝柱，以环己烷／丙酮为洗脱溶剂，在环己烷-丙酮(6：4)段富集到所需活性部位，洗脱剂用量为3VB。

The effects of above-mentionedconditions on alkylene reaction are studied to obtain the optimum reactive conditionsby orthogonal experiments having seven factors and three levels. GCLE is chosen as material to prepare 7-phenyl acetamideyl vinyl cephalkyl acidp-methoxy benyl eatsr in the experiment. The process is as follow: GCLE reacts withiodide in solvent, and produce 3-iodid, then reacts with PPh_3 to produce Witting agent,and reacts with HCHO to produce 7-phenyl acetamideyl vinyl cephalkyl acid p-methoxy benyl eatsr in alkaline conditions.

试验选用GCLE作为原料制备7-苯乙酰氨基-3-乙烯基头孢烷酸对甲氧苄酯，反应过程如下：GCLE与碘化物、PPh3在溶剂中反应生成3位膦盐，在碱性条件下生成Wittig试剂再与HCHO反应生成7-苯乙酰氨基-3-乙烯基头孢烷酸对甲氧苄酯。

The application of orthogonal experiment to the assessment of the management of almond forest was investigated.

探讨了正交试验法在辽西地区山杏林地经营管理技术评价中的应用。

Merged altimetry sea level anomaly data over China seas for more than 14 years is analyzed using the Empirical Orthogonal Function method. The spatial and temporal characteristics of sea level variability over Yellow Sea, East China Sea and South China Sea are presented, respectively.

用经验正交函数分析方法，对中国近海14年多的测高海平面同化格网资料进行分析，给出了黄海、东海和南海各海平面变化主要主成分的空间变化和时间变化特征。

Methods The clarification process of Prunus americana juice was studied through single factor and orthogonal test.

通过单因子试验和正交试验研究布朗李汁的澄清工艺。

Multistep deposition process has been adopted in the preparation of superfine inorganic composite antibacterial powder, Ag~+ as crystal nucleus, packed outside by the hydroxid and phosphate precipitate of Ti and Zr elements etc., The optimal process conditions have been found from one-factor influence tests and multi-factor orthogonal test,and the optimal process conditions were: Ag iron was imported by silver ammine, and then 100ml Titanyl sulphate solution mixing with zirconium sulfate keep hot at 90 ℃ for 30 mins, and the Zr/Ti ratio is 0.15,and Na_2HPO_4 was added in the end.

超细无机复合抗菌粉体的制备采用以Ag~+沉淀物作为晶核，外包裹Ti、Zr等金属的氢氧化物沉淀和磷酸盐沉淀物的多步沉淀工艺，并利用单因素和正交试验法对制备工艺进行了优化，其最佳工艺条件是：Ag~+以银氨络合物引入，沉淀钛锆的反应时间为0.5h，反应温度为90℃，水解反应时体系总液量为100ml、Zr/Ti为0.15，沉淀物经水洗、干燥，于700℃煅烧4.0h；即得最终产品。

The effects of the ratio of water and the sample, extracting temperature, extracting time, and the sample particle size on water-soluble active ingredients of Ampelopsis grossedentata were investigated with single factor and orthogonal experiments as a measure of total flavones and water extraction ratio.

以水溶性活性成分总黄酮和水浸提率作为衡量浸提效果的评价指标，分别采用单因素和正交实验L9(34)确定了茶水比、浸提温度、浸提时间和样叶粒度对显齿蛇葡萄总黄酮和水浸提率的影响，得出了影响的主次顺序为茶水比、浸提温度、样叶粒度和浸提时间。

The processing technique was gained through determinating the content of amygdalin by HPLC, and orthogonal test was used to investigate the influencing factors of time, temperature and the material thick.

摘要采用正交试验法，以苦杏仁苷为指标，优选烘法炮制苦杏仁的最佳工艺；同时考察温度、时间、物料厚度对苦杏仁苷的影响。

Salt is good, but if the salt becomes flat and tasteless, with what do you season it?

14：33 盐本是好的，盐若失了味，可用什么叫它再咸呢？

He reiterated that the PLA is an army of the people under the leadership of the Communist Party of China.

他重申，人民解放军是在中国共产党领导下的人民军队。