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Under the conditions of stir speeds 400 r·min~(-1) and distance between anode and cathode 1 mm, by using the orthogonal design, the optimum technological conditions were found that the current density was 0.3 A·cm~(-2), initial NaOH concentration in catholyte was 50 g·L~(-1), reaction times of two steps were all theoretical electrochemical reaction times. In the first electrosynthesis, initial Na_2CrO_4 concentration in anolyte was 650 g·L~(-1), and reaction temperature was 80℃. In the second electrosynthesis, initial Na_2Cr_2O_7 concentration in anolyte was 700 g·L~(-1), and reaction temperature was 85℃.

324全氟磺酸增强复合阳离子交换膜、阴阳极液中搅拌速度均为400r·min~(-1)条件下,通过正交实验得到优化工艺条件为:电流密度0.3A·cm~(-2),阴极液氢氧化钠初始浓度50g·L~(-1),两步反应时间均为理论电催化反应时间,第一步阳极液铬酸钠初始浓度650g·L~(-1),反应温度80℃,第二步阳极液重铬酸钠初始浓度700g·L~(-1),反应温度85℃。

The ultrasonic-assisted solvent extraction and quantitative analysis of the oxine-copper residues in soil with ion pair of antiphase HPLC was established. This methods mainly uses XBridge C5 column and UV detector by using waters phase of phosphatic buffered solution/acetonitrile (60:40, by vol) as mobile phase with 0.8 mL/min flow ratio and UV detection at 245 nm. The residue time was 4.72 minute. The linear correlation of this method was 0.9987. The recovery rate was 76.2 to 108.7%. Comparatively standard deviation was 0.6 to 3.37%. The detection limits of method was 0.05 mg/kg.

建立了土壤中喹啉铜的超声波辅助溶剂提取-反相离子对高效液相色谱法的残留分析方法,该方法使用XBridge C18色谱柱和可变波长紫外检测器,并以水相磷酸盐缓冲体系-乙腈(体积比60:40)作流动相;流速为0.8mL/min;检测波长为245nm;保留时间为4.72min;线性相关系数为0.9987,回收率在76.2%~108.7%之间,相对标准偏差在0.6%~3.37%之间,对土壤的最低检出限为0.05mg/kg。

It was proved that this theory was scientific. The criticism that it was voluntarism, or it led to dogmatism necessarily, or it was out of date, was theoretical wrong, and was baneful in practice.

实践证明,"灌输论"是科学的,所谓"灌输是唯意志论"、"灌输必然导致教条主义"、"灌输论过时了"等责难,在理论上是错误的,在实践中是有害的。

Results It was verified that the rate of correct diagnosis for the malignant tumor was 90%,false negative rate was 10%,false positive was not found. The rate of correct diagnosis for the benignant disease was 75% and false negative rate was 25%.

结果 恶性肿瘤确诊率为90%,假阴性率为10%,无假阳性病例;良性病变确诊率为75%,假阴性率为25%;总确诊率为85%。

The results showed that NAA at low concentrations 0.1~0.2 mgL^(-1 was more beneficial for root induction, the rate of rooting was up to 100%. 1/4MS was more suitable to deal with the plantlet rooting and form small bulb. The optimal ratio of IBA and AC for rooting was 2.0 mgL^(-1) IBA+0.1%AC. The in vitro growth of plantlets were the strongest, and survival rate was 100% after incubating at 4℃ for 4 weeks when the diameter of bulblet was ≥9 mm.

结果显示;低浓度的NAA0.1~02mgL^(-1有利于根的诱导;生根率均达100%;大量元素1/4MS处理更适合试管苗的生根和小鳞茎形成;"IBA+AC"处理最佳组合是2.0mgL^(-1) IBA+0.1%AC;鳞茎直径≥9mm的试管苗去顶4℃低温冷藏4周;移栽后喷施1/2MS营养液;长势最好;成活率达到100%。

Petya must, one would suppose, have known that he was in a wood, with Denisov's band of irregulars, a verst from the road; that he was sitting on a waggon captured from the French; that there were horses fastened to it; that under it was sitting the Cossack Lihatchev sharpening his sabre; that the big, black blur on the right was the hut, and the red, bright glow below on the left the dying camp-fire; that the man who had come for the cup was an hussar who was thirsty.

彼佳原本知道他是在树林里,在杰尼索夫的游击队里,离大路有一里路,他正坐在从法国人手里缴获来的一辆大车上,大车旁边拴着马,大车下坐着哥萨克利哈乔夫,正帮他磨刀,右边一团黑影是看林人小屋,右下方亮着一团红的是快烧完了的火堆,来拿茶杯的是一个想喝水的骠骑兵;但是,他什么也不知道,他也不想知道这一切。

First, a chlorinator was self-designed in this paper, and dichloride of 2-methyl-1-propene was synthesized by 2-methyl-1-propene reacted with chlorine fast in this reactor. By means of the Orthogonal Experiments design and single factor experiments, the influence of several reaction variables on the yield were examined and the optimum reaction conditions under the intervallic operation were obtained, the yield and selectivity of dichloride of 2-methyl-1-prop-ene were more than 65% and 80% respectively. Second, the preparation of 2-methylene-1, 3-propanediol, which dichloride of 2-methyl-1-propene reacted with alkali was investigated. By means of the Orthogonal Experiments design and single factor experiments, the influence of several reaction variables on the yield were examined and the optimum reaction conditions under the intervallic operation were obtained, the conversion of dichloride of 2-methyl-1-propene was 100%. Moreover the preparation of MPO, which 2-methylene-1, 3-propanediol reacted with hydrogen, in presence of Al_2O_3-Pd catalyst, was gotten, and the product was appraised.

本文在氯化反应过程中,自行设计制作出了氯化管式反应器,在该反应器中异丁烯和氯气迅速混合反应生成二氯异丁烯,根据该氯化反应特征利用正交试验和单因素试验考察了有关因素的影响并优化得到了最佳工艺条件,二氯异丁烯的总收率达65%以上,选择性达80%;接着,对二氯异丁烯进行水解反应制得了2-甲烯-1,3-丙二醇,讨论了相关因素对水解反应的影响,并通过正交试验和单因素试验得到了较佳工艺条件,二氯异丁烯的转化率达100%;同时还对制备的2-甲烯-1,3-丙二醇在常压下采用三氧化二铝负载钯催化剂催化加氢得目的产物MPO,并对产品进行了鉴定,从而打通了整个工艺路线。

The initial model of the clasper binding machine was established based on conception design,and its optimization was made.The dynamics character of the clasper binding machine was analyzed base on the ADAMS,the virtual design was performed based on the SOLIDWORKS,and the stress and deformation under load was analyzed based on ANSYS.The result of the simulated analysis of virtual prototyping was verified by the experiment.

它是计算仿真技术与产品设计有机的结合,通过CAD/CAM/CAE等技术把产品的信息集成到一个可视的环境中,以实现在产品制造前就可以对整个产品进行完整的分析与方案的优化,观察并试验各组成部件的相互运动过程、受力分析、装配关系、性能特性等,使用系统仿真软件在各种虚拟环境中真实地模拟系统的运动,以便修改设计缺陷,不断改进设计方案,直至获得最优设计方案,再制造物理样机。

It was shown that when the production function was constant return to scale, the model became a A-K model; when the production function was increasing return to scale, the equilibrium point was unstable; when the production function was decreasing return to scale, the equilibrium point was a saddle.

结果发现:生产函数为规模收益不变时,模型简化为A-K模型;生产函数为规模收益递增时,均衡点为不稳定结点;生产函数为规模收益递减时,均衡点为鞍点稳定。关键词:数理经济学;经济增长;政府支出;生产效应

In batch cultures, glucose, xylose and arabinose in cornhusk dilute acid hydrolysate after detoxification were consumed by Actinobacillus succinogenes NJ113, when the total sugar concentration was 50 g/L in medium, the final succinic acid concentration of 34.2 g/L was obtained, resulting in a succinic acid yield of 0.68 g/g and a succinic acid productivity of 0.83 g/. When the total sugar concentration was 68.2 g/L in medium, the succinic acid concentration was 42.3g/L, the yield was 0.62g/g, and productivity was 0.98 g/.

经过脱毒处理后,产琥珀酸放线杆菌 NJ113均能利用水解液中的葡萄糖、木糖、阿拉伯糖,培养基总糖浓度为50 g/L时,丁二酸分批发酵的质量收率可达0.68 g/g,浓度可达34.2 g/L,生产强度达0.83 g/,总糖浓度为68.2 g/L时,丁二酸质量收率仍可达0.62 g/g,浓度42.3 g/L,生产强度0.98 g/。

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相关中文对照歌词
When Everything Was What It Was
Sun Was High (So Was I)
Jesus Was Our Saviour And Cotton Was Our King
Before There Was Atlanta, There Was Douglasville
Phil Cosby (Before There Was Atlanta, There Was Douglasville)
I Didn't Say I Was Powerful, I Said I Was A Wizard
All I Was Looking For Was You
Hò Bha Mi, Hé Bha Mi (Hò I Was, Hè I Was)
The Moon Was Yellow (And The Night Was Young)
Stella Was A Diver And She Was Always Down
推荐网络例句

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应,而且减少跟风的可能性。

The new PS20 solar power tower collected sunlight through mirrors known as "heliostats" to produce steam that is converted into electricity by a turbine in Sanlucar la Mayor, Spain, Wednesday.

聚光:照片上是建在西班牙桑路卡拉马尤城的一座新型PS20塔式太阳能电站。被称为&日光反射装置&的镜子将太阳光反射到主塔,然后用聚集的热量产生蒸汽进而通过涡轮机转化为电力