查询词典 sample method

Sample data were selected by standard deviation law and factor variables were selected by the method of principal components analysis, stepwise and enter regression analysis. The forecast precision of the model is 87.35%.

样本数据筛选采用标准差法，因子变量筛选采用主成分因子分析法、多元线性回归的逐步回归和强行进入法等方法，建立的多元回归模型预测总体精度达到87.35%。

The most common method for determination of drug residues in surface water is GC-MS,which often requires derivatization as a sample preparation step.

测定地表水中药物残留的最常用方法是GC-MS，它需要一个衍生步骤。

Has established the Avey rhzomorph through the field test remains the analysis method in the sea cabbage and the soil, and remained to it in the sea cabbage and the soil has carried on the determination, the sample with the methyl cyanide extraction, after extracting the revolving concentration nearly did, with the few methyl cyanides dissolves, passed through PRS the solid phase extract column to purify again, eluent air-dried after the nitrogen with the nitrogen methyl imidazole and the trifluoroacetic acid bitter wine grows, the derivative with the highly effective liquid chromatography analysis, used the external standard legal quantity.

通过田间试验建立了阿维菌素在甘蓝及土壤中的残留分析方法，并对其在甘蓝和土壤中的残留进行了测定，样品用乙腈提取，提取液旋转浓缩近干后用少量乙腈溶解，再经PRS固相萃取柱净化，洗脱液经氮气吹干后用氮甲基咪唑和三氟乙酸酐衍生，衍生物用高效液相色谱分析，采用外标法定量。

At present, molecularly imprinted technology has borne a focus on developing a fast, simple and effective pre-preparation method for bio-sample in order to promote performance of model analysis instrument.

成为一种快速、简便和有效的生物样品预处理方法，是促进现代仪器分析效能增益的热点研究技术。

The method of moments approach to estimation implies imposing the population moment restrictions on the sample moments.

矩方法是将总体的矩限制应用于样本中。

The quantitative method was adopted to investigate the morphometry of the intramuscular arteries with computerlzed model judgement and randomized sample check.

运用计算机的模式判别和随机化抽样测量，对肌内动脉分枝进行了定量研究。

Multi-stage random sampling method is used, and the sample size is 750 persons in total.

采用多阶段系统随机抽样的方法，抽取750人进行入户调查。

A simple sample with crack is analyzed on thermal fatigue applying finite element method and multilinear kinematic hardening rules of material, based on which the processes and rules of the thermal fatigue crack opening are studied.

用有限元方法并考虑材料的多线性随动强化性质对带有裂纹的简单试件模型进行热疲劳分析，研究热疲劳裂纹张开的过程和规律。

［Objective］ To extract and separate polysaccharide from Cordyceps mycelium, and establish content test method of polysaccharide in sample.

［目的］从冬虫夏草菌丝体发酵液中提取，分离虫草多糖，并建立样品中多糖的含量测定方法。

Through the operating practice, it was shown that the MATLAB-based method provided a rapid approach for the spreading design and manufacturing of the neckband curve and gives a valuable sample for the design of packaging machine.

为使制成的袋子外形平整，符合形状尺寸要求，在设计制造翻领成型器时，要特别注重其领口曲线的确定和展开(领口曲线即图 1中所示领状外表面与管状内表面的交线SCS)。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。