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  the column
     The 50mg Pu(SO4)2.4H2O absorbed in the column can be desorbed by 5mL 4mol/L methanoic acid or 8mL mixed solution of 0. 2mol/L sulfuric acid and 0. 1mol/L nitric acid.
     吸附在柱上的钚可用4mol/LHCOOH或0.2mol/L H_2SO_4-0.1mol/L HNO_3混合酸作解吸剂。
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     The gas chromatography method was applied to the determination of content of floazifop-p- butyl. A OV– 17 1 m×3 mm (id) chromatography column was used and the column temperature was 190℃.
     采用气相色谱法,使用OV–171m×3mm(id)色谱柱,在柱温190℃时测定精吡氟禾草灵含量;
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     The results of column experiments show that Rh~(3+) is not adsorbed at certain concentrations of hydrochloric acid and passes through the column directly, Ft~(4+), Pd~(2+), Ir~(4+) are adsorbed on column, they can be eluted with ascorbic acid and different concentrations of thiourea acidic aqua respectively.
     试验结果表明在一定盐酸浓度时,Rh~(3+)不被固定相吸附,直接流出柱外,被吸附在柱上的Pt~(4+)、Pd~(2+)、Ir~(4+)可用一定浓度的抗坏血酸酸性溶液还原淋洗Ir~(4+),再用不同浓度的硫脲酸性溶液分别淋洗Pd~(2+)和Pt~(4+)。
短句来源
     The results of column experiments show that Rh~(3+) is not adsorbed at certain concentrations of hydrochloric acid and passes through the column directly, Ft~(4+), Pd~(2+),Ir~(4+) are adsorbed on column, they can be eluted with ascorbic acid and different concentrations of thiourea acidic aqua respectively.
     试验结果表明在一定盐酸浓度时,Rh~(3+)不被固定相吸附,直接流出柱外,被吸附在柱上的Pt~(4+)、Pd~(2+)、Ir~(4+)可用一定浓度的抗坏血酸酸性溶液还原淋洗Ir~(4+),再用不同浓度的硫脲酸性溶液分别淋洗Pd~(2+)和Pt~(4+)。
短句来源
     Results showed that the minimum detecting concentration of sulphur compounds was up to mg/m~3 level. With the column temperature in 70℃, injector temperature in 180℃, detector temperature in 150℃, and N_2 flow rate at 50mL/min, the recovery of carbon disulfide was 98.66%, and relative standing deviation was 2.12%, while the recovery of dimethyl sulphide was 98.66%, and relative standing deviation was 1.56%.
     结果表明:该分析对含硫气体的最小检测浓度在mg/m3级,在柱温为70℃,检测器温度为180℃,气化室温度为150℃,氮气流速为50mL/min时,CS2的回收率为98.66%,变异系数为2.12%; 甲硫醚的回收率为98.66%,变异系数为1.56%。
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     Automated Synthesis of (S-[~(11)C]-methyl)-L-methionine and (S-[~(11)C]-methyl)-L-cysteine by On-column [~(11)C]methylation
     在柱甲基化法自动合成(S-[~(11)C]甲基)-L-蛋氨酸和(S-[~(11)C]甲基)-L-半胱氨酸
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     Air,Freon-12,Freon-125,Freon-143a,Freon-22 and Freon-134a are effectively separated when the oven temperature is 70 ℃,using a 6 m×3 mm column packed with porasil of 150~180 μm and a thermal conductivity detector.
     采用6 m×3 mm填充柱,粒径为150~180μm的Porasil为固定相,H2为载气,热导池检测器,在柱温70℃时,将空气、F-12、F-125、F-143a、F-22和F-134a的混合物分离;
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     METHODS: To prepare three affinity chromatography columns, antisense peptides were immobilized, called RT1-sepharose 4B, RT2-sepharose 4B and RT3-sepharose 4B, respectively and investigate the retardative behavior for each of native peptide TR1, TR2 or TR3 on above columns with stepwise elution.
     方法制备固相反义肽亲和层析柱-RT1-sepharose4B,RT2-sepharose4B和RT3-sepharose4B,采用阶段洗脱法,观察相应天然肽-TR1、TR2和TR3在柱上的滞留行为。
短句来源
     Under the condition that the temperature of column was 140℃, in sample inlet was 180℃, detector was 180℃, and the nitrogen flow was 30 mL/min, the average recovery rate was 100.3%, relative standard deviation was 3%.
     结果表明:在柱温140℃,进样口温度180℃,检测器温度180℃,氮流量30mL/min时,平均回收率为100 3%,相对标准差为3%。
短句来源
     Trimethylamine in Ambient Air was separated by GC with 4% PEG-20M+1% KOH GXD-401 as fixed phase in 2m×3mm glass packed column,FID as detector,at column temperatures of 140℃,sample inlet and detector temperatures of 180℃ with the nitrogen flow of 30mL·min -1.The average recovery rate is 100.13% with relative standard deviation of 3.0%.
     采用4%聚乙二醇(PEG)-20M+1%KOH和GXD-401为固定相,2m×3mm玻璃填充柱分离三甲胺,FID检测。 结果表明:在柱温140℃,进样口温度180℃,检测器温度180℃,氮流量30mL·min-1时,平均回收率为100.13%,相对标准偏差为3.0%。
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     Pave Pillar
     (宝石)
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     Chromatographicseparation has been achieved on C18 column with acetonitrile-O.
     C18;
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  the column
After giving a suitable model for the cutting strips problem, we present a branch-and-price algorithm for it by combining the column generation technique and the branch-and-bound method with LP relaxations.
      
Some theoretical issues and implementation details about the algorithm are discussed, including the solution of the pricing subproblem, the quality of LP relaxations, the branching scheme as well as the column management.
      
We observed that the flow profiles of the scaled-up column were flat during the whole chromatographic process, and the efficiency and resolution of the column were also increased in accordance with theoretical prediction.
      
In the case of displacing (by the solution) thin oil films, which were preliminarily deposited onto the capillary surface, the advancing meniscus of the trisiloxane solution collects the column of oil from the film.
      
The process of bubble separation of substances using large gas bubbles totally closing the cross section of the column was investigated.
      
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An adaptation of Yang's method for the separation of synthetic peptides with protecting groups on aluminium oxide column is described. Using this method some peptides have been isolated and purified with good results. Only one peak was shown on the chromatogram when the purified octapeptide, cbz-gly-L-phe-L-phe-L-tyr-L-thr-L-pro-L-(?)-Tos-lys-L-ala-OCH_3, was applied to the column. A crude product of the same octapeptide gave several peaks. If appears that the aluminium oxide column is effective for the separation...

An adaptation of Yang's method for the separation of synthetic peptides with protecting groups on aluminium oxide column is described. Using this method some peptides have been isolated and purified with good results. Only one peak was shown on the chromatogram when the purified octapeptide, cbz-gly-L-phe-L-phe-L-tyr-L-thr-L-pro-L-(?)-Tos-lys-L-ala-OCH_3, was applied to the column. A crude product of the same octapeptide gave several peaks. If appears that the aluminium oxide column is effective for the separation of these peptides.No detectable amount of peptide-bond cleavage on the column was observed. On rechromatography, a definite component appeared only at a definite position. The total recovery was on the average about 80%.

本文提供了用氧化铝柱层析分离带有保护基团多肽的数据。此法能把不同的带有保护基团的多肽分离出来,峯形亦能重复,而直在柱上并无显著的破坏作用。总回收率在80%左右。对于溶解度很差的粗制品不能适用。

Analysis of synthetic fatty acids by gas chromatography with flame ionization detector is described.The samples were methylated first,and the fatty acid methyl esters were separated on columns packed with 20% Apiezon L(APL)and 20% poly-1,3-butandiol succinate(PBDS)under isothermal conditions at 240 and 200℃ respectively,and on column with 10% polyethylene glycol adipate(PEGA)using temperature programming method.The relative retention volume data obtained on APL column are consistent with those reported in literature.Quantitative...

Analysis of synthetic fatty acids by gas chromatography with flame ionization detector is described.The samples were methylated first,and the fatty acid methyl esters were separated on columns packed with 20% Apiezon L(APL)and 20% poly-1,3-butandiol succinate(PBDS)under isothermal conditions at 240 and 200℃ respectively,and on column with 10% polyethylene glycol adipate(PEGA)using temperature programming method.The relative retention volume data obtained on APL column are consistent with those reported in literature.Quantitative determinations were carried out on PEGA column at 150--210℃(heating rate 2℃/min),flow rate of nitrogen 127ml/min,and a technique based on the peak area normalization method without correction was used.The average error for the odd number fatty acids(C_9—C_19) which being used as standards was found to be±3.47%.Total acid value of synthetic fatty acids sample calculated from the quantitative results is in good agreement with that of chemical determination.

本文叙述了测定合成皂用脂肪酸的气相色谱法,着重饱和脂肪酸的定量。用作标准的奇碳脂肪酸(C_9—C_19)系自行合成的,色谱柱和聚酯类液相亦为自制,方法为先将标准酸和皂用脂肪酸试样进行甲酯化,先后在Apiezon L柱(240℃)和聚1,3-丁二醇丁二酸酯(PBDS)柱(200℃),以及在聚乙二醇己二酸酯(PEGA)柱,于两种翟序升温的条件下进行定性分离,在Apiezon L柱上得到的保留数据和文献查得值核对基本一致。定量系采用(PEGA)柱,在柱温150—210℃,2℃/分,N_2流速127毫升/分的条件下,在氢焰离子化鉴定器上,以不加校正峯面积百分比定量。结果表明,对标准酸的分析误差平均为±3.47%,并测得了上海制皂厂生产的合成皂用脂肪酸含有C_8—C_21共14个组分,按照定量结果计算的酸值和化学法测得的数据相比,结果能很好相符。

An adsorption column with a column packing thinly coated with alumina was used for the rapid analysis of C_1—C_4 hydrocarbons at a column temperature of 40℃.Factors influencing the efficiency,selectivity,and stability of the column,such as properties of the support,methods of coating,content of alumina,time and temperature of heat-treatment, and deactivation of alumina surface,were studied.A preferred stationary phase was obtained by coating first the support with alumina by chemical method,and then with 0.1%...

An adsorption column with a column packing thinly coated with alumina was used for the rapid analysis of C_1—C_4 hydrocarbons at a column temperature of 40℃.Factors influencing the efficiency,selectivity,and stability of the column,such as properties of the support,methods of coating,content of alumina,time and temperature of heat-treatment, and deactivation of alumina surface,were studied.A preferred stationary phase was obtained by coating first the support with alumina by chemical method,and then with 0.1% squalane as detailing agent.Column packed with this stationary phase of 6 metres long and 0.4 cm in internal diameter could be used to separate methane,ethane, ethylene,propane,propylene,isobutane,n-butane,n-butene,isobutene,trans-butylene-2, and cis-butylene-2 within 10 minutes at 40℃.

在情性担体表面上用化学法涂渍20%氧化铝吸附层,再涂以0.1%异三十烷作去尾剂,使氧化铝表面钝化稳定。用装有上述固定相的长6米、内径0.4厘米的色谱柱,可在柱温40℃和10分钟内分离甲烷、乙烷、乙烯、丙烷、丙烯、异丁烷、正丁烷、正丁烯、异丁烯、反丁烯-[2]和顺丁烯-[2]等十一个组分。

 
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