色谱参数在QSAR中的应用开辟了一个新的领域，即定量保留活性关系(QRAR)。
The application of chromatographic parameters in QSAR give rise to a new field, namely, quantitative retention-activity relationship (QRAR).
他通过对他的过滤系统进行调整，保留一定量的鱼的排泄物在水里，这样的话，植物就可以和鱼共生于一池了。
By tweaking his filtration system to leave a certain amount of fish waste in the water, plants can be grown in the same tank.
本文对半纤维素在纸张抄造过程中的作用进行了阐述，指出了加入和保留一定量的半纤维素对纸张物理强度的影响。
This paper describes the use of Hemicellulose on the paper production process and points out the impact on paper physical strength because of entering and keeping a rational Hemicellulose.
本文运用定性描述与定量解析、理论研究与实证分析相结合的方法，构建了基于大规模定制的旅游业顾客保留模型。
This thesis USES the theoretical research and empirical analysis of the ways to build the model of the tourism industry to retain customers based on mass customization.
方法通过水蒸气蒸馏，利用GC-MS进行分析，采用相对保留指数对化合物进行定性，用峰面积归一化法进行定量。
MethodsBy steam distillation and GC-MS analysis methods, chemical compounds were analyzed qualitatively using relative reservation index, and analyzed quantitatively by area normalization.
文中探讨了进样量对保留时间，载气性质和定量校正因子对定量结果的影响问题。
The influence of sample size, carrier gas, correction factor on quantitative results has been approached.
定性方法为相对保留值法，定量方法为修正面积归一化法。
The relative retention was used as qualitative analysis, and the quantitative analysis was corrected area normalization method.
方法：用HPLCDAD联用色谱检测，借助HELP法解析，基于组分的色谱保留时间和光谱曲线进行定性，然后用总体积积分法定量。
METHODS: To carry out qualitative and quantitative analysis by means of HPLC DAD detection, heuristic evolving latent projections (HELP) resolution method and overall volume integration method.
方法水中的毒死蜱经二氯甲烷萃取后，用火焰光度检测气相色谱法测定，以保留时间定性，外标法定量。
Methods Chlorpyrifos was determined by GC-FPD after extraction by dichloromethane. Qualitative analysis was done by retention time and quantitative analysis by external standard curve.
方法水中的毒死蜱经二氯甲烷萃取后，用火焰光度检测气相色谱法测定，以保留时间定性，外标法定量。
Methods Chlorpyrifos was determined by GC-FPD after extraction by dichloromethane. Qualitative analysis was done by retention time and quantitative analysis by external standard curve.
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