测定时间

A rapid and simple method was developed for determination of aroma c omponents of apple wine by head space solide-phase microextraction coupled to capillary gas chromatography-mass spectrometry. Four paramete rs, including fiber coatings,extraction time,concentration of salt, and extraction temperature,were optimized. 2-Octanol was used as an inter nal standard for accuracy improvement.

以顶空固相微萃取法（Head Space Solid-Phase Micro-Extractions，HS-SPME）和气相色谱质谱（Gas Chromatgraphy-Mass Spectrometry，GC-MS）联用，2-辛醇为内标，研究了萃取头、萃取时间、加盐质量浓度、萃取温度对苹果酒中香气物质萃取的影响，优化了分析条件，建立了快速测定苹果酒中香气物质的方法。

The results indicate that aphids number ratio have distinct difference among five wheat varieties, and the wheat varieties resistance to aphid are consistent with those in seedling.

以在感蚜的小麦品种上繁殖10代以上的麦长管蚜作为虫源，在5个不同抗性的品种上饲养5日的时间，而后测定各品种上麦长管蚜羧酸酯酶和谷胱苷肽-S-转移酶的活性和酶体系的蛋白含量。

By using the basic principle of soil hydrodynamics,this paper designs the indoor experiment of soil water infiltration under surge furrow irrigation ,and in the light of the influence of the different water-supplying times,circulating ratios and periods on the soil water infiltration process,determines some parameters related to the soil water movement.

应用土壤水动力学的基本原理，设计了波涌沟灌条件下水分入渗的室内试验，针对不同供水时间、循环率及周期对土壤水分入渗过程的影响，测定土壤水分运动有关参数。

The determination of buffer capacity of urea-formaldehyde resin used in MDF is discussed.

探讨中密度纤维板用脲醛树脂缓冲容量的测定，并分析影响脲醛树脂缓冲容量的因素，脲醛树脂缓冲容量对其固化时间和压制中密度纤维板性能的影响。

Polyunsaturated fatty acids were concentrated from mixture fatty acids of tuna oil by silver nitrate complexiation.

以金枪鱼鱼油混合脂肪酸为材料，利用硝酸银络合法浓缩其中的多不饱和脂肪酸，主要考察了搅拌时间和硝酸银浓度对产品得率和EPA和DHA含量的影响，并测定了产品的理化指标和脂肪酸组成。

The parameters of CT perfusion include blood flow,blood volume,mean transit time and permeability surface.

测定病变的血流量、血容积、平均通过时间和表面渗透性。

The titer test showed that the polyclonal antibodies immunonized by two immunogens all had high titer and the longer interval made for obtaining higher titer. The speciality test showed that the polyclonal antibodies immunonized by conjugations MQCA-RSA had the better speciality than the other one. Usage of RSA as the carrier protein could avoid producing antibody for carrier protein.

以两种偶联物为不同免疫原、采用不同的免疫时间间隔免疫新西兰大白兔，获得多克隆抗体，抗体效价测定和特异性鉴定的实验结果表明：两种免疫原均能产生高效价的抗体，免疫间隔延长有利于效价提高，且以RSA为载体有利于避免针对蛋白载体的抗体产生。

Using the advanced analysis technology, such as inclusion measuring temperature, calcite cement's electronic probe and isotope analysis, and the water-core reaction theory, the paper sets up the diagenefic model of coal measures strata, time-temperature model and pore evolutionary model, and provides the basis for seeking the high efficient reservoirs.

利用包体测温、自生石英的氧同位素测定、方解石胶结物的电子探针和同位素分析等先进分析测试技术，结合水岩反映理论，建立了煤系地层的成岩模式和相应的时间温度模型和孔隙演化模式，为高效储层的寻找提供了依据。

MethodsThe minimal inhibitory concentration and time-killing rate of different sizes of polyethylanimine, alone and in combination with the drugs against two isolates of Candida albican were investigated.

通过体外实验测定不同分子质量聚乙烯亚胺单独及与三种不同类别的常规抗菌药物联合使用对两株白念珠菌的最小抑菌浓度和杀灭时间，确定PEI单独及联合使用的体外抗真菌活性。

To take soil samples from test pit at different time after tracers were put in and to measure the distribution of specific activity at different depth is the usual method in studing nuclide migration in aerated zone at CIRP's Field Test Site.

野外试验场核素迁移试验通常采用的方法是在示踪核素投放后不同时间在试验坑取土样，测定不同深度处的核素比活度分布。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。