查询词典 optimum

The serum selenium is first digested by microwave treatment and then chemically purified before analysis by using sulphydryl cotton. The optimum conditions were found to b as follows:(1) The sulphydryl cotton column is prewashed with 5 mol/L hydrochloric acid;(2) Se is desorbed by adding 1 mL of concentrated nitric acid and (3) the optimum amount of sulphydryl cotton is 0.14 g. This preconcentration step is required in order to remove matrix-interfering elements, such as Na, Mg, K and Ca.

采用微波消解－巯基棉分离对人血清样品进行前处理，通过对巯基棉分离血清中硒的条件优化，结果表明，柱条件为5mol/L HCl、解脱Se条件为1mL重蒸HNO3、巯基棉最佳用量为0.14g时，能够有效分离出人血清样品中的Na、Mg、K、Ca等碱金属和碱土金属，同时硒的回收率最高，达到92%以上。

The researching content was as follows: 1. When AlClx/HY zeolite be used as catalyst, the effects of the ratio of 2-methylnaphthalene to tetramethyl benzene, catalyst concentration, reaction temperature and reaction time on the conversion (based on 2-methylnaphthalene), yield and selectivity (both based on 2,6-DMN) were discussed. In addition, by orthogonal experiment, the optimum reaction conditions were determined at the same time. The optimum reaction conditions : the molar ratio of 2-methylnaphthalene and tetramethyl benzene =1:1, reaction temperature was 400℃.

具体研究如下： 1、以AlClx/HY型分子筛为催化剂，研究原料配比(2-甲基萘与均四甲苯的摩尔比)、反应温度和反应时间对2-甲基萘的转化率、目的产物2，6-DMN的收率和选择性的影响，并通过正交实验确定了该催化剂体系下的最佳反应条件为：原料的摩尔比为(2-甲基萘：均四甲苯)=1：1，反应质量空速为6h-1，反应温度为400℃。

The optimum conditions were achieved and demonstrated as follows: ethanol solution (volume fraction as 60 %) as extraction solution, the ratio of materials to solution as 1:20, microwave power as 600 W and 2 mm extraction time. By the optimum conditions, the yield (83.7%) of flavone from Trollius chinensis Bunge was obtained at 83.7%.

实验结果表明：微波辅助提取金莲花黄酮的最佳工艺条件是体积分数60%乙醇为溶剂，每克料浸提剂体积为20mL，微波功率600W，温度60℃，提取时间2min。

These skills allow him to use the viticultural 'strengths' of an area to create the optimum quality wine at the optimum cost.

这些技能使他能够使用葡萄种植作为优势，以最佳成本生产出最佳的优质葡萄酒。

The results showed that the optimum concentration of five important components i.e. Tag DNA polymerase, Mg2+, primer, template DNA and dNTPs in 25μL RAPD reaction system were 1.0u, 2.5mM, 20ng, 40ng and 0.2mM, respectively. The RAPD fingerprinting of five Japanese plum cultivars were established by using optimum reaction system with ten random primers.

结果表明：1、改良陈大明法是提取中国李叶片基因组DNA的适宜方法。2、以5′-GACCGCTTGT-3′为随机引物，建立了优化的中国李RAPD反应分析体系：25μL反应体系中，Taq酶、Mg~(2+)、引物、模板DNA和dNTPs 5种主要成分的适宜浓度或用量分别是：1.0u、2.5mmol·L~(-1)、20ng、40ng和0.2mmol·L~(-1)。

The ISSR fingerprinting of 18 Japanese plum cultivars and 12 plum species or variety were established by using optimum system with primer 5"-9T-3"and 5"-9C-3", respectively. The identification rate of plum cultivars and species or variety was 100%. The effects of five important components on reaction of SSR were studied with Prunus salicina cv. Meilili. The results showed that the optimum concentration of five important components i.e. Tag DNA polymerase, Mg +, single primer, template DNA and dNTPs in 25 μL reaction system of SSR were 1.5u, 2.0mM, 0.8 μ M, 30~40ng and 0.16~0.24mM, respectively. The dendrograms of these cultivars was contructed according the Jaccard coefficient of similarity.

利用该优化体系，以5′-_9T-3′为引物，构建了中国李18个品种的ISSR指纹图谱，该引物可将这些品种完全区别开来；以5′-_9C-3′为引物，构建了李属6类种质资源的ISSR指纹图谱，该引物区分率为100％。4、中国李品种适宜的SSR反应分析体系是：25μL SSR反应体系中，Taq DNA聚合酶、Mg~(2+)、每个引物、模板DNA和dNTPs等5种成分的适宜浓度分别是：1.5u、2.0mmol·L~(-1)、0.8μmol·L~(-1)、30～40ng和0.16～0.24mmol·L~(-1)。5、采用RAPD、ISSR和SSR等三种分子标记技术对中国李品种资源54份和2个欧洲李品种进行了遗传多样性分析，并以品种间的遗传相似系数构建了Jaccard聚类树状图。

During the using study of handle of forceps and pancake turner this paper discovers that handle"s crooking is an important factor which affects product"s ergonomical performance and is helpful to improve the product"s usability, and that crooked angle of handle exists an optimum value, but the best crooked angle of handle of different product is different, if the optimum value is found the product"s using study should be done.

本文从镊子柄和锅铲柄的使用性研究中发现：手柄弯曲是影响产品人机工程学性能的一个重要因素，它对提高产品的可用性有着很重要的意义；手柄的弯曲还存在一个最佳角度。但是不同产品手柄的最佳弯曲角度是不相同的，倘若要获得某产品手柄的最佳弯曲角度，还必须进行该产品的使用性研究。

Through analysis of variance, the best mass ratio of different coating material matching is found out: It is the best matching when the mass ratioof red clay membrane urea is 5:7,which can lengthen the eluviationing time for 11 days, reduce the nitrogen eluviationing loss by 16.12%; the amount of the clay quality has no use to lengthen the eluviationing time and the result is not obvious; when the quality ratio of urea and gypsum is 5:8,it can lengthen the eluviationing time for 8 days, reduce the nitrogen eluviationing loss by 23.86%;when the quality ratio of urea and gypsum is 5:7,it can lengthen the eluviationing time for 30 days, reduce the nitrogen eluviationing loss by 16.58% when the contrast urea N is all eluviated out ; it is the optimum matching association; When the quality ratio of the urea and the sulfur is 5:6, which is a optimum proportion ,it can l

根据对淋溶时间、经济成本等的对比，经过方差分析，找出了不同包裹材料的最佳质量比的搭配组合：红胶泥包膜尿素的质量比是5：7时最好，可以延长淋溶时间11天，减少氮素淋溶损失16.12%；粘土质量的多少对延长尿素的释放时间作用不大，效果不明显；石膏和尿素两者的最佳质量比是5：8时，可以延长淋溶时间8天，减少23.86%的氮素淋溶损失；硼砂和尿素的质量比是5：7可以延长淋溶时间30天，当对照尿素N素全部淋出时，减少16.58%的氮素淋出，是最优

The finite element analysis of static electric field and the orthogonal design method are combined and used to optimize ECT sensor with an overall score of the reconstructed image fidelities of typical flow patterns as the optimum object function. The overall quality of the images reconstructed is improved effectively by this optimum method.

提出一种以典型流型重建图象质量综合评分最优为目标，有限元分析与正交设计相结合的ECT传感器优化设计方法，有效地改善了重建图象的总体质量。

This method can obtain the optimum coagulant,shoot the optimum adding amount,design the best flocculates time through jar test ,and utilize orthogonal experiment to seek the best energy consumption allocative decision at different levels.

提出了混凝工艺设计的优化方法，通过烧杯试验得到最优混凝剂和最佳投加量以及最佳设计絮凝时间，并利用正交试验寻求多因素不同水平组合下的最佳能耗分配方案。

Plunder melds and run with this jewel!

掠夺melds和运行与此宝石！

My dream is to be a crazy growing tree and extend at the edge between the city and the forest.

此刻，也许正是在通往天国的路上，我体验着这白色的晕旋。