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  含量
    Study on the Purification Method of Phosphatidylcholine with High Content
    高含量磷脂酰胆碱制备方法研究
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    A PHENOLIC RESIN WITH HIGHER CARBON CONTENT AND LOWER MODULUS
    高碳含量低模量的酚醛树脂
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    THE APPLICATION OF COMPUTER IN ULTRAVIOLET SPECTROPHO TOMETRY——Content Analysis of Aspirin,Phenacetin and Caffeine in their Mixture
    电子计算机在紫外光谱中的应用——阿斯匹林、非那西丁和咖啡因在其混合物中的含量分析
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    BUOYANCY METHOD FOR THE DETERMINATION OF DRY RUBBER CONTENT IN FIELD LATEX
    浮力法测定橡胶胶乳中的干胶含量
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    Micro-fluorimetry of the Total Content of Ascorbic Acid in Urine
    微量荧光法测定尿中总抗坏血酸含量
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  用量
    and the optimum purification was that content of chitosan was 0.4 ml/g,the concentration ratio of extraction was 1.2:1 and the temperature was 70℃.
    纯化工艺最佳条件为壳聚糖用量0.4mL/g,药液浓缩比例1.2:1,絮凝温度70℃。
短句来源
    When the content of CPVC is between 20% and 30%(based on the total weight of SBS and HCCP),the adhesive has not only good stability and excellent water resistance properties but also high adhesion to PVC material.
    CPVC用量为骨架聚合物总用量的20%~30%时,所制胶黏剂的贮存稳定性及耐水性能较好,对PVC材料的黏合强度亦较高。
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    The effects of system solvent,raw materials molar ratio,catalyst(toluene-p-sulfonic acid) content and accelerator(methanol) content on the yield of DMDBX were studied. The optimized reaction conditions were with cyclohexane/methanol solvent,the molar ratio of(3,4-dimethyl) benzaldehyde to xylitol 2.4∶1.0,the mass fraction of catalyst and accelerator to raw materials 4.0% and 430% respectively.
    考察了溶剂种类、原料摩尔比、催化剂对甲苯磺酸用量及促进剂甲醇用量对产品收率的影响,优选出较佳工艺条件为:采用环己烷-甲醇作为溶剂,原料3,4-二甲基苯甲醛与木糖醇的摩尔比为2.4∶1.0,催化剂用量为原料质量的4.0%,促进剂用量为原料质量的430%。
短句来源
    The optimum conditions for the preparation are 0.5% catalyst,1.3 to 1.62 % NaCIO,30 min oxidation time,12% NaOH,2% Na2B4O7·10H2O,and 25 to 30% solid content.
    最佳制备条件为催化剂用量0.5%,次氯酸钠用量(有效氯)1.3%-1.6%,氧化时间30 min,氢氧化钠用量12%,硼砂用量2%,固含量25%-30%.
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    In the process of producing the PP-g-MAH by graft coplymerization of polypropylene with maleic anhyaride in the twin-screw extruder, the effects of MAH content, initiator(DCP) content, reaction temperature and reaction time on the grafting rate were studied.
    研究了通过双螺杆挤出机聚丙烯熔融挤出接枝马来酸酐制马来酸酐接枝聚丙烯(PP-g-MAH)的工艺,包括单体马来酸酐(MAH)、引发剂DCP的用量及熔融反应温度和时间对聚丙烯(PP)熔融接枝MAH的接枝率的影响。
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  含量测定
    Factors and conditions of determining each acid content in a mixture of strong and weak monoacid
    在强酸与一元弱酸混合酸中影响各组分酸含量测定的因素及条件
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    Methods The content of Huangqifuzheng oral solution was determined by HPLC. C18 column was as analytical column,acetonitrile-water(27:73)was as the mobile phase; the flow rate was 1.0 mL/min,the detecting wavelength was at 270 nm.
    方法含量测定用高效液相色谱法,以C18柱为分析柱,乙腈-水(27:73)为流动相,流速为1.0mL/min,检测波长为270nm。
短句来源
    Result: The recovery of determination method of content was 97. 1%; variation coefficient was below 3. 0%.
    结果:含量测定方法的回收率为97.1%,方法相对标准偏差小于3.0%。
    Research on Determination Method of Potassium p Chlorophenoxyacetate Content
    对氯苯氧乙酸钾的含量测定方法研究
短句来源
    Determination Method for Main Content of BSU & HMN
    六甲基二硅脲、六甲基二硅胺主含量测定方法
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  “content”译为未确定词的双语例句
    Study on Adhesive and Gluing Technology for High Moisture Content Wood
    高含水率木材用胶粘剂与胶接技术的研究
短句来源
    A STUDY OF RHEOLOGICAL PROPERTIES OF MOLTEN POLYETHYLENE TEREPHTHALATE Part Ⅰ:Influence of Moisture Content on Melt Rheological Properties at Low Shear Rates
    聚酯熔体流变性能的研究——低剪切速率下水分对熔体流变性能的影响
短句来源
    SYNTHESIS AND APPLICATIONS OF HIGH SOLID CONTENT SBR LATEX
    高固物丁苯胶乳的合成和应用
短句来源
    Studies on Star-Shaped Polybutadiene with Medium Vinyl Content
    星形中乙烯基聚丁二烯的研究
短句来源
    Study on the Solid State Chlorinated Polyethylene Toughened PVCⅡ.The Effects of Chlorine Content in CPE and Blending Methods on the Compatibility of Blends
    固相法氯化聚乙烯增韧聚氯乙烯的研究Ⅱ.CPE的氯含量及共混方式与PVC/CPE相容性的关系
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  content
Most of the compounds increase the cAMP content of CHO cells expressing the human A1-adenosine receptor, indicating an antagonist activity.
      
Results obtained both by molecular mechanics and semiempirical methods indicate that for ameltolide, the cis and trans forms have similar energy content.
      
The influence of methanol content, pH value, ion types, and ionic strength of mobile phase are studied in detail.
      
The surface concentration of 3,5-dinitrobenzoyl ligand is 2.082 μmol m-2, according to the carbon content of elemental analysis.
      
The content of the volatile components in blue ballpoint pen ink were determined by gas chromatography (GC).
      
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In this paper a modified method is recommended for the determination of rubber hydrocarbon present in kok-saghyz rubber by means of bromination.This method is rapid and accurate.A conversion factor of 0.298 is obtained for con- verting rubber bromide content to rubber hydrocarbon content for kok-saghyz rubber.The conversion factor agrees well with the theoretical value.

本文报告了用重量溴化法测定青橡胶草生胶中橡胶烃的各种适宜条件,并求得了由溴化橡胶换算为橡胶烃的换算因数为0.298。三氯甲烷可用来防止溴化橡胶的结膜,同时并可防止溴与橡胶的置换反应。每10毫升橡胶液应加溴化溶液2毫升。溴化反应可在常温进行。三氯醋酸可使橡胶容易溶解,对分析结果无显著影响,用或不用均可。溴化法无论在分析时间上和精确度上,均较直接抽提法和间接测定法为优。

A modified method is described for the analysis of straight run gasoline and Fisher-Tropsch gasoline with the aid of calibration curves.This method can be satis- factorily applied to samples with aromatics or olefin content below 15% by volume. Carrier displacement technique is recommended for the separation of saturated hydrocarbon and aromatics at low temperatures using normal pentene as carrier. This method is more efficient than the conventional pentane elution technique. A method for the analysis...

A modified method is described for the analysis of straight run gasoline and Fisher-Tropsch gasoline with the aid of calibration curves.This method can be satis- factorily applied to samples with aromatics or olefin content below 15% by volume. Carrier displacement technique is recommended for the separation of saturated hydrocarbon and aromatics at low temperatures using normal pentene as carrier. This method is more efficient than the conventional pentane elution technique. A method for the analysis of ordinary cracked gasoline is also suggested.

本文介绍用新的校正曲线进行烷-芳烃二元系(直馏汽油)和烷-烯二元系(费托合成汽油)的分析.误差分别为0.2%与0.5%(体积).用戊烯为夹带剂可以有效地将烷-芳烃混合物分离.试验应在较低温度下进行以避免烯的聚合.根据所提出的经验公式,可以进行与一般低芳烃含量的裂化汽油组成相近的烷、烯、芳烃三元系的分析.误差在1%以下.

In the present investigation, water in bleaching powder was found to play a leading role in determining the stability of the latter. In order to compare the stability of various samples of bleaching powder, we determined the content of the available chlorine before and after a sample kept in a small glass-stoppered tube at 90℃ for 8 hours. The ratio of residual to the original content of available chlorine when expressed in percentage is defined as the index of stability.The samples of bleaching...

In the present investigation, water in bleaching powder was found to play a leading role in determining the stability of the latter. In order to compare the stability of various samples of bleaching powder, we determined the content of the available chlorine before and after a sample kept in a small glass-stoppered tube at 90℃ for 8 hours. The ratio of residual to the original content of available chlorine when expressed in percentage is defined as the index of stability.The samples of bleaching powder and raw calcium hypochlorite investigated in our work contain-ed in the main the following components: Ca(Ocl)_2(S), Ca(OCl)_2·3H_2O(S), CaCl_2·6H_2O(S)and CaCl_2·Ca(OH)_2·H_2O(S). When bleaching powder or raw calcium hypochlorite was thoroughly dried under a vapor pressure of 0.1 mm. Hg at 25°, two of the components were dehydrated according to the following reactions (Figure 5): Ca(OCl)_2·3H_2O(S) = Ca(OCl)_2(S) + 3H_2O(~5mm. Hg) CaCl_2·6H_2O(S)=CaCl_2·H_2O(S) + 5H_2O(~1.0 mm. Hg) and the index of stability attained 100% (Figures 6 and 7). Water which can be removed from a sample under the above conditions is defined as removable water. By the control of amount of the removable water in a sample, the index of stability can be made to vary between 0 to 100%.If we take the percentage of the available chlorine decomposed in an hour at 90 as the rate of decomposition (D %/hr.), the latter seemed to vary linearly with the amount of removable water (W %) (Figure 8). When the samples were heated in a stoppered tube to 90° from 25°, the removable water probably redistributed according to the following scheme: xCa(OCl)_2(S) + y Ca(OCl)_2·3H_2O(S) + z CaCl_2·6H_2O(S) 25° xCa(OCl)_2(S) + (y + (5z)/3) Ca(OCl)_2·3H_2O(S) + z CaCl_2·H_2O(S) 90° Inasmuch as the thoroughly dried samples did not decompose considerably even at 90°, the decomposition of OCl~- seemed to take place almost exclusively in the phase Ca(OCl)_2·3H_2O(S). The linear relationship of D vers. W indicated that the decomposition rate of a sample varied linearly with its content of the component Ca(OCl)_2·3H_2O(S) at 90°. In the light of the above results, an explanation was proposed to account for the decomposition of bleaching powder under the conditions of storage.

本工作肯定,水在漂白粉的稳定性问题中具有极其重要的作用.漂白粉和漂粉精样品在0.1毫米汞柱的蒸气压下可脱去的水称为可脱水.在90°下八小时后样品中有效氯量占原有效氯量的百分数称为其稳定度.稳定度测值指出,样品的可脱水率从0%递增时,其稳定度则从100%递减至0%.根据吸水率-蒸气压图等数据,样品的可脱水主要分布在物相Ca(OCl)_2·3H_2O(S)和CaCl_2·6H_2O(S)中,而在90°下,全部可脱水则集中至前一物相.样品有效氯成分的分解主要在Ca(OCl)_2·3H_2O(S)中,而在Ca(OCl)_2(S)中分解很少.稳定度的数据指出,在90°下,样品有效氯分解率与其中可脱水率成正比,从而亦与其中物相Ca(OCl)_2·3H_2O(S)的含率成正比. 根据上述,作者并从生产实践的意义讨论了漂白粉的稳定性问题.

 
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