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concentration
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  浓度
    DETERMINATION OF MANGANESE IN URINE BY LOW CONCENTRATION DIFFERENTIAL SPECTROPHOTOMETRIC-FORMALDOXIME METHOD
    低浓度差示分光光度—甲醛肟法测尿锰
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    Analysis of Water Vapor Concentration with Dew Point Method during Reduction of Ammonia Catalyst
    在氨催化剂还原中用露点法分析水汽浓度
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    On-line Determination of Cumene Hydroperoxide Concentration in Cumene Oxidation Products by Liquid Ultrasonic Velocimeter
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    KINETICS OF AN-MA-MAS PRECIPITATION TERPOLYMERIZATION IN AQUEOUS MEDIUM(Ⅱ).EFFECTS OF MONOMER CONCENTRATION,TEMPERATURE AND AGITATION
    AN—MA—MAS水相沉淀聚合动力学——(Ⅱ)单体浓度、温度及搅拌的影响
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    TRIAL APPLICATION OF MTBE USING LOW CONCENTRATION ISOBUTYLENE C_4 FRACTION
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  浓缩
    EXTRACTION AND CONCENTRATION OF AMINO ACID WITH LIQUID MEMBRANE
    液膜法提取浓缩氨基酸
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    The Treatment of High Concentration Organic Wastewater by Evaporation Concentration With low Consumption of Energy
    低能耗的高浓度有机废水蒸发浓缩治理技术
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    Study on the Mechanism of Concentration and Extraction of Garlic SOD with Ultrafiltration Method
    超滤法浓缩提取大蒜SOD机制的研究
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    RESEARCH APPLICATION PLATE HEAT EXCHANGER TO CONCENTRATION SYSTEM
    浓缩系统中板片换热器的应用研究
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    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℃。
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  富集
    Application of the On-line Sweeping Concentration Technique and the Frontal Analysis to the Study of Pharmacokinetics
    在线Sweeping富集技术和前沿分析法在药代动力学研究中的应用
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    Concentration of EPA and DHA from fish oil by Urea Inclusion
    尿素包合法富集鱼油中的EPA和DHA的研究
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    Under the optimum conditions (isopropanol/(NH4)2SO4=1.5 mL/4.3 g, acidity of system pH=4.0, concentration of gibbertimes less than 0.064 g/L), a one step extraction percentage(E%) and the enrichment multiple reached to 93.47% and 11.36 respectively.
    结果表明在醇盐比(异丙醇/硫酸铵)为1.5mL/4.3g,体系酸度为pH4.0,赤霉素浓度小于0.064g/L时,赤霉素在该体系的一步提取率可达93.47%,富集倍数为11.36。
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    The results showed that the concentration of K+ in the enrichment solution can reach to 63.07g/L,which is 166 times more than that in seawater;
    结果表明,产品钾富集液中的K+含量达63.07g/L,较海水浓缩166倍;
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    The preparation of CTS-SH and concentration of Ag~+
    CTS-SH的制备及对Ag~+的富集
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  “concentration”译为未确定词的双语例句
    Studies on the Edi Process and Its Applications for the Removal and Concentration of Cu~(2+) Ions in Water
    电去离子(EDI)过程及其用于水中Cu~(2+)离子的脱除与浓缩的研究
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    Studies on the Critical Micelle Concentration of N-Alkylbetaines by Fluorescence Probe
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    Measurement of Critical Micelle Concentration for Surfactant Solution by the Drop-Volume Method
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    Determination of Critical Micelle Concentration of Surfactant by Using An Intramolecular—Charge—Transfer Fluorescence Probe
    分子内电荷转移荧光探针法测定表面活性剂的临界胶束浓度
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    IMPROVEMENT IN THE YIELD OF DIMETHYL ETHER FROM SYNTHESIS GAS UNDER CONCENTRATION PERIODIC OPERATION
    IMPROVEMENT IN THE YIELD OF DIMETHYL ETHER FROM SYNTHESIS GAS UNDER CONCENTRATION PERIODIC OPERATION
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  concentration
More generally, these results apply both to Gabor frames and to systems of Gabor molecules, whose elements share only a common envelope of concentration in the time-frequency plane.
      
aureus in lower concentration of chloroform extract.
      
Transfersomal formulation with optimal concentration of Soya phosphatidylcholine (SPC) and sodium deoxycholate (85:15 w/w) showed entrapment efficiency of 39.8±0.032 and deformability index of 16.4.
      
None of the synthesized compounds appear to be more potent than 1 at a concentration of 10 μM.
      
Only two of the evaluated compounds (2 and 8) appeared to be allosteric enhancers at high concentration (10 μM).
      
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This communication reports the results of a study of the gravimetric deter- mination of lead as normal phosphate, known as Vortmann and Bader method, which has been recently examined by Hubicki and Rys. According to our findings, tartaric acid should be added only when antimony is present. With the addition of tarearic acid unusual large excess of precipitant as suggested by Vortinann and Bader is required for complete precipitation. The suitable pH range for the precipitation of tertiary lead phosphate is 6.5...

This communication reports the results of a study of the gravimetric deter- mination of lead as normal phosphate, known as Vortmann and Bader method, which has been recently examined by Hubicki and Rys. According to our findings, tartaric acid should be added only when antimony is present. With the addition of tarearic acid unusual large excess of precipitant as suggested by Vortinann and Bader is required for complete precipitation. The suitable pH range for the precipitation of tertiary lead phosphate is 6.5 to 10. Below pH 6.5, the precipitation will be incomplete, owing apparently to the formation of acid phosphate(s). Beyond pH 10, no experiment has been made, because no advantage is gained by working in such alkaline media. The concentration of the precipitant in sdlution after reaction should be within 0.00085-0.0033 molar in order to obtain good results. The precipitates may be ignited at any temperature from 650℃ up to at least 900℃. The practice of drying the pre- cipitates at 130℃ to constant weight suggested by Hubicki and Rys should be discarded, since the precipitates still contain noticeable amounts of water after drying to constant weight at that temperature. It is preferred to use the method of precipitation from homogeneous solution. With this technique in practice dense, crystalline and easily filterable precipitates are obtained; and small quantity of lead, as low as 5 mg, may be determined satisfactorily. The effect of presence of some alkali and ammonium salts has also-been studied.

本文報告用磷酸根測定鉛重量法的各種適宜條件。溶液的pH值應在6.5至10之間。過剩沉澱劑在溶液中的濃度應為0.00085——0.0033M。沉澱應在650℃-900℃間灼燒之;如在130℃乾燥,則沉澱內的水份不能完全驅盡。均勻沉澱可改善沉澱的性質,並可测定少至5毫克的鉛。如溶液中無銻,則不必加酒石酸。

As cinchonine is not produced in our country and the ignition of mercurous tungstate is a troublesome operation leads us to examine critically the determination of tungsten as barium tungstate.The results of our experiments reveal that barium tungstate should be precipitated from a boiling solution of pH 7.2—8.0 with a rather large excess of barium chloride. The concentration of the precipitant, after precipitation, should be maintained within eight tenth to two millimolar, in order to obtain acceptable...

As cinchonine is not produced in our country and the ignition of mercurous tungstate is a troublesome operation leads us to examine critically the determination of tungsten as barium tungstate.The results of our experiments reveal that barium tungstate should be precipitated from a boiling solution of pH 7.2—8.0 with a rather large excess of barium chloride. The concentration of the precipitant, after precipitation, should be maintained within eight tenth to two millimolar, in order to obtain acceptable results. The barium tungstate precipitates may be ignited at 500—900°. When they are dried at 105 or 150°, they weigh several tenth milligrams heavier than that after ignition, presumably due to very small amounts of occluded water. The carbonate (from carbon dioxide in air and in water used) and chloride (from the precipitant) contents of the precipitates are negligible, being less than three and three to four parts per thousand respectively, while no precautions are taken to remove or guard against carbon dioxide con tamination. This method of determination may be used to estimate as low as six milligrams of tungsten trioxide. The exclusion of carbon dioxide during the determination, as suggested by Buscarons Ubeda et al and Duval et al, is found to be unnecessary. The influence of several ammonium, potassium and sodium salts are studied. Among them, sodium and ammonium acetates interfere the least, and potassium chloride the most. For detail please refer to Fig. 3 in this paper.

本文敍述用鎢酸鋇法测定鎢的適宜條件。沉澱應在pH7.2—8.0,微沸的溶液,用熱氯化钡溶液進行。沉澱劑應在沉澱後仍維持0.8—2毫克分子濃度。過低則沉澱不完全,過高則結果偏高。灼燒沉澱温度為500—900°。本法可以测定6毫克及以上的三氧化鎢。沉澱中的碳酸鹽(<3‰)和氯化物(當沉澱劑過量为50—100%時,3—4‰)均可不顧。隔絕或除去二氧化碳也無必要。幾種銨、鉀和鈉鹽的影響亦曾加以探討。

The vapour pressures of water above concentrated brine and bittern have been determined in the temperature and concentration ranges commonly met with in the actual practice of salt production along the China coast.

本文根据我国海盐生产的具体条件,测定了一系列不同温度,不同浓度和不同成分的海水、卤水蒸汽压,并得出了下列关系曲线。 (1)浓度固定时,海水卤水蒸汽压和温度的关系曲线; (2)温度固定时,海水卤水蒸汽压和浓度的关系曲线。

 
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