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分数体系
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  score system
     About the Problems of Designing the Language Test Score System
     浅探语言测试分数体系的设计问题
短句来源
     Through analyzing the score system of some tests: CET-4&CET-6、HSK、GRE、CLEP and following the common of these score systems,this study discuss the score system of criterion-referenced test. At last,authors indicate some problems in some test' score systems at present.
     该文从国内外重大标准参照测验CET-4&CET-6、HSK、GRE、CLEP等分数体系入手,通过对其分数体系的共同点分析,探讨出适合于标准参照测验的分数体系,最后指出目前一些测验的分数体系仍然存在的问题。
短句来源
     The Comparative Study of Criterion Referenced Test's Score System at Home and Abroad
     国内外标准参照测验分数体系的比较研究
短句来源
     Whether the designing of language test score system is good or not will have effect on how exactly and concisely the language test score will reflect the abundant meaning of test result.
     语言测试分数体系设计的优劣关系到语言测试的分数能否准确而简洁地反映语言测试结果丰富内涵的问题。
短句来源
     The Study of Criterion Referenced Test's Score System
     标准参照测验分数体系的探讨研究
短句来源
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  相似匹配句对
     THE CHARGE DENSITY OF FRACTIONAL QUANTIZED HALL REGIME
     分数量子Hall体系的电荷分布
短句来源
     The Study of Criterion Referenced Test's Score System
     标准参照测验分数体系的探讨研究
短句来源
     Fractional Covered Graphs
     分数覆盖图
短句来源
     248 from both.
     248体系
短句来源
     World-system
     世界体系
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  score system
0.5) correlates with the quality of the score system.
      
The severity of alcohol withdrawal was estimated by an max 25 point score system.
      
The predictive power of a score system must be reevaluated before reliable conclusions can be drawn in given groups of patients.
      
For other patients with malignant diseases the use of a new score system developed for patients with cancer can be helpful in the clinical decision making.
      
Additionally, the severity extrapyramidal motor symptoms were judged by a clinical score system.
      
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The effects of temperature,pH value and concentration on viscosity of gelatin solution have been studied in this paper. The UV_Vis Spectra of gelatin solution is measured and the relationship between the absorption bands and pH value is discussed. The IR spectra of solid gelatin is also investigated. On the basis of these researches,the structural characteristics,properties and physical quality are introduced.

本文深入研究了明胶溶液的质量分数、体系温度、溶液pH 值对溶液粘度的影响,明胶溶液紫外光谱吸收与pH 值的关系,并归属分析了明胶固体的红外光谱吸收,对明胶的结构特征、性能特点做了详尽的探讨。

In the paper,We studied the main influencing factors such as concentration of polyacrylamide,concentration of Cr 3+ ,temperature,pH value on the gelling property of PAM/ Cr 3+ gel.The influence rules are presented .From the angle of fractal structure diffusion reaction kinetics ,the above rules are further described .

探讨了 Cr3+ 的质量分数、聚丙烯酰胺的质量分数、体系的反应温度、p H值等几个重要因素对以 Cr3+ 交联的聚丙烯酰胺凝胶性能的影响规律。从分形结构反应扩散理论的角度 ,对上述规律作了进一步的解释

The effects of the mass fraction of monomers,the variety and mass fraction of initiator,the pH value of reaction system,reaction temperature and reaction time on the characteristic viscosity of the product in the copolymerization of DMDAAC(dimethyldiallylammonium chloride) and AM(acrylamide) by using reversed phase method are studied.It is shown that,the characteristic viscosity of copolymer P(DMDAAC-AM) is over 12 when VA-044 is used as the initiator and its mass fraction is 0.3%,the mass fraction of the monomers...

The effects of the mass fraction of monomers,the variety and mass fraction of initiator,the pH value of reaction system,reaction temperature and reaction time on the characteristic viscosity of the product in the copolymerization of DMDAAC(dimethyldiallylammonium chloride) and AM(acrylamide) by using reversed phase method are studied.It is shown that,the characteristic viscosity of copolymer P(DMDAAC-AM) is over 12 when VA-044 is used as the initiator and its mass fraction is 0.3%,the mass fraction of the monomers is 20%,the mole ratio of DMDAAC to AM is 0.4,the pH value of reaction system is 5,the volumetric fraction of oil is 30%,the reaction temperature is 55 ℃ and the reaction time is 5 h.The oily wastewater in Shengli Oilfield and Liaohe Oilfield is respectively treated using the copolymer,and the light transmittance of the treated wastewater reaches above 90% when the characteristic viscosity of the copolymer is above 12 and the mass concentration of it is 1.0 mg/L.

应用反相乳液聚合方法研究了二甲基二烯丙基氯化铵(DM)与丙烯酰胺(AM)的共聚物P(AM-DM)合成过程中单体质量分数、引发剂质量分数、体系的pH值、反应温度、反应时间等对所得聚合物特征黏数的影响.结果表明:以VA-044为引发剂且质量分数为0.3%、单体质量分数为20%、DM/AM物质的量比为0.4、体系pH为5、在55℃反应5 h、油的体积分数为30%时,所得产物的特征黏数达12以上.用所得的P(AM-DM)聚合物处理辽河油田、胜利油田的含油污水,当特征黏数超过12且使用浓度为1.0 mg/L时,处理后水的透光率可达到90%以上.

 
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