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  detection
    Application of Dual-Wavelength Spectrophotometry to the Ore Analysis π.Lowering Detection Limit and Increasing Precision and Accuracy by Dual-Wavelength K-factor Spectrophotometry
    双波长分光光度法在矿石分析中的应用——Ⅱ.双波长K系数法降低测定的检出限和提高测定的准确度和精密度
短句来源
    Detection and Determination of Rare Earth Elements with Flow Injection Technigue
    希土元素的流动注射分析法检出与测定
短句来源
    STUDY ON THE APPLICATION OF ICP-AES FOR THE ANALYSIS OF PURE RARE EARTH ELEMENT OXIDE Ⅴ. Study on Detection Limits of Rare Earth Impurity Element for the Spectrographic Exposure of ICP-AES
    ICP-AES在高纯稀土氧化物分析中应用的研究Ⅴ——稀土杂质元素ICP摄谱法检出限研究
短句来源
    Sensitivity and Detection Limit of Ion Probe Mass Spectrometer: I. Definitions and Influencing Factors
    离子探针质谱计的灵敏度与检出限 I.定义和影响因素
短句来源
    Sensitivity and Detection Limit of Ion Probe Mass Spectrometer:Ⅱ.Techniques of Prac-tical Measurement/
    离子探针质谱计的灵敏度与检出限 Ⅱ.实验测量技术
短句来源
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  the detection
    On the optimized conditions, the detection limits were 0.0273 μg/L for arsenic and 0.0034 μg/L for mercury. The RSD was 1.09%-3.34%(n=7). Arsenic and mercury recoveries were 96.59%-103.97% and 96.78%-98.95% respectively.
    在最佳仪器工作条件下,砷和汞的检出限分别为0.0273μg/L、0.0034μg/L,测定结果的相对标准偏差为1.09%~3.34%(n=7),砷和汞的加标回收率分别为96.59%~103.97%和96.78%~98.95%。
短句来源
    The linear range of this analysis method was between 4ng/ml to 48ng/ml,the correlation coefficient(r) of standard curve was 0.9998.The detection limits of Chromium(Ⅲ) and(Ⅳ) were 0.8ng/ml and 0.7ng/ml respectively.
    分析方法的线性范围为4-48ng/m l,标准曲线的相关系数r=0.9998。 检出限分别为铬(Ⅲ)=0.8ng/m l,铬(Ⅵ)=0.7ng/m l。
短句来源
    The detection limit(3σ) of this method was found to be 20.1 μg·L-1.Good selectivity of the method was shown by the results of interference test.
    该法具有高灵敏度,对透明质酸钠的检出限(3σ)为20.1μg. L-1,选择性较好。
短句来源
    UV detection at 386 nm was used,linearity of the calibration curve was obtained in the range of 8-4 000 μg·L-1.The detection limits for oxytetracycline,doxycycline,tetracycline and chlortetracycline were 6,13,6 and 7 μg·L-1 respectively.
    四环素类药物的质量浓度在8~4 000μg. L-1范围内呈线性关系,回收率为95%~102%,相对标准偏差为1.2%~3.6%,检出限分别为6,13,6和7μg.
短句来源
    The linear relationship between the peak current and Norfloxacin concentration was found in the range of 4.0×10-9~4.0×10-7mol·L-1 with correlation coefficient of 0.996.The detection limit was found to be 1.0×10-9mol·L-1(S/N=3) with acummulation for 110 s.
    该氧化峰的二阶导数峰电流与诺氟沙星的浓度在4.0×10-9~4.0×10-7mol. L-1(富集90 s)范围内呈线性关系,相关系数为0.996,检出限为1.0×10-9mol.
短句来源
更多       
  a detection
    In 0.05 mol/L phosphate buffer(pH 6.0) and by differential pulse voltammetric mode,there was an excellent linearity between oxidation current and concentration of p-benzenediol in the range of 1×10-4-6×10-6 mol/L with a detection limit of 4.0×10-7 mol/L.
    微分脉冲伏安结果显示,催化氧化峰电流与对苯二酚浓度在1×10-4~6×10-6mol/L范围内呈良好的线性关系,检出限达4.0×10-7mol/L(S/N=3)。
短句来源
    Under optimized conditions,the linearity of the calibration curve for IBA was in the range of 1.0×10-8-2.4×10-7 mol/L with a detection limit of 7.4×10-9 mol/L(S/N=3).
    在最佳条件下,工作曲线的线性范围为1.0×10-8~2.4×10-7mol/L,检出限(信噪比为3)为7.4×10-9mol/L。
短句来源
    The peak current was linear with Pb2+ concentrations in the range of 0.02-1.2 mg/L with a detection limit of 10 μg/L.
    利用该修饰电极测定铅的线性范围为0.02~1.2mg/L,检出限为10μg/L。
短句来源
    The linear range of the calibration curve for carbendazim was 0.05-2.5 mg/kg with a detection limit of 0.63 μg/kg. The recovery range was 96%-101%. No complicated sample pretreatment was required.
    香菇中多菌灵的线性范围为0.05~2.5mg/kg,检出限为0.63μg/kg,回收率为96%~101%。
短句来源
    Sensitivity and reproducibility of the methods were compared. The method using C18 column in selected ion monitoring (SIM) mode had a detection limit (S/N=3) of 120 pg, and a good linearity of the calibration curve was obtained for tetrodotoxin (r=0.9992).
    应用反相色谱法,在选择离子监测(SIM)模式下,对TTX的分析具有良好的线性响应(r=0.9992),方法检出限(S/N=3)为120pg,相对标准偏差(RSD)低于10%;
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更多       
  detecable
    The minimum detecable concentrations of the method were 0.017 mg/m~3 and 0.017 mg/m~3 for 300 L the air.
    若采集300 L空气进行测定,则最低检出浓度分别为0.017 mg/m3和0.017 mg/m3;
短句来源
    The minimum dtecable concentration of flumetsulam is ther mally stable for GC analysis. On the level of 5.0-100.0ug/kg,The minimun detecable concentration of flumetsulam in the sammples of soybean grain was 5.0ug/kg.
    本方法最小检出限为 5.0μg/kg,具有灵敏度高、回收率高以及操作简便等优点。
短句来源
    The lowest detecable limit for three hormones were in nanogram le 58 (v/v) at a flow rate of 1 mL/min, was performed with a UV monitor at 254nm. The average recovery of four internal plant hormones were 92.13%-95. 25% (n = 5) and correlation coefficients were 0. 99vel.
    被测组分的含量与其峰面积有良好的线性关系(r=0.9996~1.000),加标回收率在92.13%~95.25%,同时文中还评估了不同贮藏温度和不同试剂处理对(木奈)果实中GA_3含量的影响。 3种内源激素的最小检出限均在纳克级。
短句来源

 

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      detection
    In this article, we focus on a quantum detection problem, where the goal is to construct a tight frame that minimizes an error term, which in quantum physics has the interpretation of the probability of a detection error.
          
    Beyond the applications of quantum detection in quantum mechanics, solutions to this frame optimization problem can be viewed as a generalization of classical matched filtering solutions.
          
    As such, the methods we develop are a generalization of fundamental detection techniques in radar.
          
    Discovery of a New Family of Membrane Progesterone Receptors in Vertebrates and Detection of the Alpha and Beta Subtypes in Mous
          
    This article discusses the problem of the detection of influential cases in nonlinear reproductive dispersion models (NRDM).
          
    更多          
      the detection
    This article discusses the problem of the detection of influential cases in nonlinear reproductive dispersion models (NRDM).
          
    It can be concluded that the newly built feeding-sample system can increase the spectral line intensity by about two to three times and decrease the detection limit by about 2 to 10 times.
          
    In the determination of DNA using trypsin, the linear ranges for hsDNA, sDNA, and ctDNA are 0-2.3, 0-2.5, and 0-1.9 μg·mL-1, and the detection limits are 0.4, 0.7, and 1.1 ng·mL-1, respectively.
          
    In the determination of trypsin using hsDNA, the linear range is 0-30.0 μg·mL-1, and the detection limit is 39.0 ng·mL-1.
          
    The detection limit of choline was 5.0 × 10-7 mol/L.
          
    更多          
      a detection
    In this article, we focus on a quantum detection problem, where the goal is to construct a tight frame that minimizes an error term, which in quantum physics has the interpretation of the probability of a detection error.
          
    Based on propagation characteristics of the worm, this paper presents a detection method called PWD (P2P Worm Detection), which is designed based on application identification and unknown worm detection.
          
    The range of SMP detection is 1.3-63.0 ng/ml with a detection limit of 0.4 ng/ml.
          
    A detection instant problem of the GARCH-process parametric change with random noise distribution is studied.
          
    The results of the development and research of the characteristics of a portable γ-spectrometer based on a segmented high-purity Ge detector with background suppression and a detection efficiency of 60% are presented.
          
    更多          
      detecable
    Specific protein expression was detected in all five myocardial regions of the human heart in western blots for the skeletal isoform 1 and cardiac isoform 2, and a weaker specific band was also detecable for isoform 3 of the SR Ca2+ release channel.
          
    Analysis of the extract revealed that 24-50% of its hyaluronan was directly detecable with the probe, while 50-76% became available only after protease digestion.
          
    In ij1-affected plastids, the plastid-encoded proteins and nuclear-encoded proteins that are associated with thylakoid membranes were not detecable.
          
    Recent data show that during development protein zero, P0, the most abundant peripheral nerve myelin protein, is detecable long before myelination.
          


    1.

    以有机染料为色区指示剂,可以改善无机色层分析中的分离方法。初步找到甲基橙和甲基红作为阳离子色层定性分析时的色区指示剂。改善法,使预检离子由十二个减至四个,并免去在分组时加入三种原溶液中不存在的离子,以及免去另用点滴法检出锰。

    3, 3', 3"-Trihydroxyaurin was proposed as an analytical reagent for metavanadate ions. It gives a blue-black precipitate or blue colouration with metavanadate. When the reaction is carried out on spot test plate, the identification limit is 0.007γ (Concentration Limit: 1:5,000,000). Among the cations and anions tested, silver, cupric, lead, bismuth, tin (II, IV), antimonous and iron (II, III) interfere.The pH values of the test solution influence the colour. Between pH 7—9, the colour intensity reaches maximum....

    3, 3', 3"-Trihydroxyaurin was proposed as an analytical reagent for metavanadate ions. It gives a blue-black precipitate or blue colouration with metavanadate. When the reaction is carried out on spot test plate, the identification limit is 0.007γ (Concentration Limit: 1:5,000,000). Among the cations and anions tested, silver, cupric, lead, bismuth, tin (II, IV), antimonous and iron (II, III) interfere.The pH values of the test solution influence the colour. Between pH 7—9, the colour intensity reaches maximum. At pH lower than 5, the colour fades, perhaps this is due to the formation of VO_2VO_3. aq. At pH greater than 10, the colour fades too, and this is probably due to the formation of V_2O_7.The coloured solution obeys Beer-Lambert's law, when the concentration is less than 1γ metavanadate per millilitre. After mixing test solution with the reagent, twenty-five minutes are necessary before the colour intensity reaches a constant value.

    3,3′,3″-三羟基金色素与偏钒酸离子生成蓝黑色沉淀或蓝溶液(视钒含量多寡)。在点滴板上检出VO_3~-时,检定限度为0.007γ,界限浓度为1:5,000,000。Ag~I、Cu~(II)、Pb~(II)、Bi~(III)、Sn~(II)、Sn~(IV)、Sb~(III)、Fe~(II,III)有干扰。溶液pH值对生成的颜色有很大影响,在pH 7—9范围内颜色强度最大。该试剂与VO_2~-作用生成物的颜色强度在每毫升含VO_2~-量小于1γ时符合比尔-蘭伯特定律,试剂加VO_3~-溶液后,需待二十五分钟颜色强度才能恒定。

    Plasmochin (N-diethylamine-isopentyl-8-amino-6-methoxyquinoline) in thepresence of 0.1N perchloric acid and 8% oxalic acid, reacts with Cr0_4~(-2) (orCr_2O_7~(-2)) ions to give a red-violet coloration which is not extracted by ordinaryorganic solvents. The limit of identification is 0.05γ at a dilution limit of 1: 10~6,Ge~(+4), Au~(+3), VO_3~-, BrO_3~-, IO_3~-, IO_4~- and NO_2~- ions interfere with the detecton of CrO_4~(-2)ions. The limit of proportion of CrO_4~(-2) ion with 74 ions has been determined andin...

    Plasmochin (N-diethylamine-isopentyl-8-amino-6-methoxyquinoline) in thepresence of 0.1N perchloric acid and 8% oxalic acid, reacts with Cr0_4~(-2) (orCr_2O_7~(-2)) ions to give a red-violet coloration which is not extracted by ordinaryorganic solvents. The limit of identification is 0.05γ at a dilution limit of 1: 10~6,Ge~(+4), Au~(+3), VO_3~-, BrO_3~-, IO_3~-, IO_4~- and NO_2~- ions interfere with the detecton of CrO_4~(-2)ions. The limit of proportion of CrO_4~(-2) ion with 74 ions has been determined andin most cases, they neither affect the reaction nor decrease the sensitivity evenin the ratio of 1: 200. Among the interfering ions Ce~(+4) and An~(+3) can be separated by ammoniumhydroxide and VO_3~- by oxine-chloroform extraction. The results after separation issatisfactory. And in a mixture of ions containing Ce~(+4) Au~(+3), VO_3~- and Cr~(+3) with aproportion limit of 20: 20: 20: 1, Cr~(+3) ion (0.094γ/0.05ml) can still be detected. Chro-mium should be previously oxidized in the sulfuric acid solution by ammoniumpersulfate or in the alkaline solution by hydrogen peroxide before the seperationof interfering ions. Plasmochin is a good reagent for detection Of CrO_4~(-3) ion owing to its high sta-bility and high sensitivity and selectivity of the reaction.

    (1)扑疟喹啉在0.1N高氯酸和8%草酸的条件下与铬酸根作用显紫色。检出限为0.05γ,界限稀度为1:10~6。Ce~(+4),Au~(+3),VO_3~-,BrO_3~-,IO_3~-,IO_4~-和NO_2~-有干扰作用。 (2)已测定铬酸根与七十四种离子界限比率。大部分以1:200的界限比率对检出的灵敏度无影响。

     
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