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- 与 used up 相关的网络例句 [注:此内容来源于网络,仅供参考]
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The logarithm difference values of partition coefficients of the compounds in butyl ether/water and in cyclohexane/water system were used for the measurement of the Lewis acidity, while the logarithm difference values of partition coefficients in trichloromethane/water and in tetrachloromethane/water system were used for the measurement of the Lewis basicity, and they were used successfully to differentiate the relative strength of Lewis acidity and basicity for 59 benzene and its derivates.
以化合物在正丁醚/水和环己烷/水溶剂体系中分配系数的对数差作为酸性指数,以其在氯仿/水和四氯化碳/水溶剂体系分配系数的对数差作为碱性指数,提出了一种新的度量有机物Lewis酸碱性的方法,按此方法成功地区分了59种苯系物Lewis酸碱性的相对强弱;并成功地将上述酸碱性指数引入定量结构—性质/活性相关研究之中,探讨了苯系物的正辛醇/水分配系数、水溶解度和土壤有机碳吸附系数等常见理化性质与其Lewis酸碱性间的相关性并建立了相应的定量模型,发现它们之间存在良好的相关性。
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Method] Alcohol solvent extraction method was used to extract the total extract of Thermopsis lanceolata, and it was treated by acid-soluble and alkalization. Then chloroform was used to extract the total alkaloids. Finally, GC-MS was used to analyze and identify the chemical composition.
方法]采用醇类溶剂提取法,提出披针叶黄华总浸膏,经酸溶、碱化处理,再用氯仿萃取出总生物碱,利用GC-MS法对其化学成分进行分析鉴定。
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The VSCF DFIG wind power generation is transient response proceeding, which is influenced by operation characteristics of generator before and after grid connected. A novel S-Function is adopted to describe the mathematic model of DFIG based on state equation. A complete simulation model of VSCF DFIG wind power generation system based on MATLAB/Simulink and SimPowerSystems is established, which can be used to not only simulate subsystems of no-load operation and generation operation, as well as can be used to but also accurate control parameters of DFIG in simulation. The simulation model have excellent transportability, and can be used DFIG of different power rated if only design relevant controller.
变速恒频双馈电机风力发电是一个受并网前后发电机运行状况影响的暂态过程,利用MATLAB的S-Function编写DFIG的仿真程序,然后结合Simulink和SimPowerSystems工具箱,开发了基于S-Function的空载运行和发电运行的变速恒频双馈电机风力发电子系统模型,在仿真过程中可对双馈电机进行精确控制,然后对其进行了系统整合,本文开发的模型具有可移植性,只要再设计相应的控制器,就可应用于不同功率等级的双馈电机风力发电系统。
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The optical system adopts special design and you can change the light filter simply, then the instrument can be used in other element"s analysis besides Cobalt. The design of instrument"s appearance adopts trapeziform framework, which looks beauty and is convenient in using.The instrument cannot only be used in on-line analysis but also be used in off-line analysis.
接着介绍了光路部分,其光路部分的独特设计可以通过简单的更换滤光片而将该仪器用于钴以外的其它元素的分析,最后在仪器的外观设计上提出梯形结构,将该仪器的四个部分结合为一个整体,具有美观实用、方便操作的特点。
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Acetonitrile-sodium chloride, trichloromethane and acetone-dichloromethane were used to extract organophosphorous pesticides respectively. Pulsed-flame photometer detector was used to analyze the extraction rate of these three solvents. Flame ionization detector was used to analyze the content of impurity in the samples extracted by those three solvents.
分别采用乙腈-氯化钠法、三氯甲烷法和丙酮-二氯甲烷法提取蔬菜样品中残留的有机磷农药,使用带脉冲式火焰光度检测器的气相色谱法比较了三种提取方法有机磷农药的提取效率,使用带火焰离子检测器的气相色谱法分析了三种提取方法杂质溶出量。
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As to the high polarity, high boiling point resultant—trimesic acid, the analysis methods of infrared spetrum, gas chromatography-mass spectroscopy, vapour-phase chromatography, acid number titration and so on are seperately used to characterize its property. Infrared spetrum and gas chromatography-mass spectroscopy are used to have a qualitative analysis on the resultant and are compared with the stand diagram. Sulfuric acid-methanol esterification and rapid esterification are used to prepare the trimesic acid trimethyl-ester and have a FID quantitative analysis. So that we make sure the purity of trimesic acid in the resultant and also we have an acid alkali titration on the resultant to get its acid number, in order to verify the purity of trimesic acid in the resultant.
对于高极性、高沸点的固体产物均苯三甲酸,分别采用红外光谱、气质联用、气相色谱、酸值滴定等分析手段进行了表征:利用红外光谱、气质联用的方法进行产物的定性分析,并与在同一仪器、同一条件下做出的标准谱图进行比对;采用硫酸-甲醇酯化法和快速酯化法制备出均苯三甲酸三甲酯,对其进行气相色谱FID定量分析,进而确定固体产物中均苯三甲酸的纯度;用酸碱滴定法确定固体产物的酸值,以对固体产物中均苯三甲酸的纯度进行验证。
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At last, the goal is that devices between the field level and the baylevel is easy to interlink,in spite of voltage being l0KV or 500KV insPitC of GlS or trolly wire being used, in spite of oPtical voltage/currenttransducer or combined voltage/current sensors being used in the field level, in spite of devices produced by ABB or GEC being used, in case that the interface scheme (including adopting which kind of network and standard) between the field level and the bay level is confirmed.
最终要达到这样一个目的,一旦过程层与间隔层的接口方案确定(包括确定使用何种网络、依据哪一个标准),那么不管系统电压是10KV还是500KV,不管是GIS还是架空线,不管过程层使用的是组合式电压/电流传感器还是光纤电压/电流互感器,不管过程层使用的是ABB的设备还是GEC的设备,过程层的设备就可以同间隔层的设备很容易地实现互连。
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Two staff used to walk in the Light of hand, even the no umbrella; Two people sitting back to back and used on the lawn in the afternoon, even if the sun is dazzling; Two people used to the cold winter with a cup of coffee you hand me a mouthful, even if it already cold coffee through ......
习惯两个人手牵手漫步在绵绵的细雨中,哪怕没有打伞;习惯两个人背靠背坐在午后的草坪上,哪怕阳光很刺眼;习惯两个人在寒冷的冬天手握着一杯咖啡你一口我一口,哪怕这咖啡早已凉透。。。。。。
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Fresh carrot, tomato and chili were used as test samples, absolute alcohol were used in process of triturating and dehydrating, acetone were used for extraction, all of the alcohol solution and acetone solution were commixed, and the content of β-carotene were directly determined by HPLC.
选用胡萝卜、番茄和红辣椒三种常见新鲜果蔬作为供试品,采用无水乙醇匀浆、脱水,丙酮提取-直接定容的方法制备供试品溶液,使用高效液相色谱法测定供试品中β-胡萝卜素的含量。
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Based on how various national and international performance evaluation systems be used in cooperation, and after introducing of various performance evaluation systems, analyzing the advantage and disadvantage of each system, especially introducing the advantage and disadvantage of balance scoring card, economic added value, performance evaluation guide inside cooperation and other evaluation system, meanwhile, reviewing the performance evaluation systems used by Yingkou Port in the past, introducing the performance evaluation system used by Yingkou Port at present, this article is to design a new performance evaluation system for Yingkou Port after disusing and referencing above systems.
本文围绕当前国内和国外的各种业绩评价方法如何用于企业集团的绩效评价,通过对各种评价方法予以介绍,并对其特征和优缺点进行分析,尤其是介绍平衡计分卡、经济增加值、企业集团内部效绩评价指导意见等评价方式的优缺点,并对营口港沿用的业绩评价方法进行回顾,介绍营口港现有的业绩评价方法,来探讨借鉴各评价方法来重新改进营口港业绩评价体系。
- 相关中文对照歌词
- You're Not From Brighton
- Used To
- Used To Know Her
- Used To Be My Girl
- Used 2 Be
- Gotta Get Used To You
- Great Big Old House
- Used To Be
- Lovers Rock
- We Used To Wait
- 推荐网络例句
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Hanna: That's over now, isn't it?
都结束了,对吗
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You must be ill. You look so pale.
你一定是病了,你的脸色苍白。
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After proper differential delay, an UWB monocycle pulse with 84-ps width and the fractional bandwidth of 153% is generated after photodetection.
两个高斯脉冲经过适当的延时,光电检测后产生超宽带单周期脉冲,其脉冲宽度为84ps,相对带宽为153%。