定量分析

It points out the necessity of tubing anchor in pumping well s,especially in deep wells.

定量分析了抽油机井油管自由悬挂可能造成的危害：降低泵效；油管柱振动加速了油管的疲劳破坏；油管屈曲造成套管、油管、抽油杆柱之间的多重磨损。

The method is simple and accurate, which can be adoptable for quantitative analysis of andrographolide、dehydroandrographolide of Qinghuozhimai tablets.

方法准确、灵敏，可作为清火栀麦片中穿心莲内酯及脱水穿心莲内酯的定量分析方法。

MATLAB is a powerful tool for improving performances of arc welding inverter, and it is a new method for quantitative analysis in the dynamic process of nonlinear arc welding system.

从而为研制工艺适应性优良的新型弧焊逆变电源和定量分析非线性弧焊系统的动态过程提供了一个强有力的工具。

The domestic experts' studies are limited to the qualitative analysis,such as the choice of flood insurance patterns,the establishment of flood insurance systems and so on.But the quantitative analysis,such as the pricing and loss assessment of flood insurance,are very rare.There is no unanimously recognized flood insurance loss assessment model so far.

目前国内专家学者对洪水保险的研究仅局限于洪水保险模式的选择、洪水保险体系的建立、洪水保险制度的建设等定性分析上，而对于洪水保险的定价、损失评估等定量分析则非常少见，还没有一致认可的洪水保险损失评估模型。

After introducing the conception of the balance of the forward link and reverse link,the relationship between the soft handover add threshold in marcocell system and the load factor in microcell system,and the relationship between the soft handover add threshold in marcocell and the ratio of the interfere of other cells users to the microcell users are analyzed quantitatively and simulated according to their corresponding performance.

在引入小区前反向链路平衡概念的基础上，重点对宏小区系统的软切换增加门限与微小区系统负载因子的关系，以及宏小区系统的软切换增加门限与其它小区干扰对微小区用户干扰之比的关系进行了定量分析和相应的性能仿真。

The 1-propanol/biuretium flour protein fractionation procedure based on the differential solubility of wheat flour protein in different aqueous solutions of 1-propanol yields three protein fractions, one monomeric in nature and two polymeric fractions corresponding to soluble glutenin, insoluble glutenin. Quantitative of the fraction was made with improved biuret reaction.

丙醇—双缩脲改良测定法用不同浓度的丙醇溶液将小麦面粉蛋白质分离为功能截然不同的单体蛋白、可溶性谷蛋白和不可溶性谷蛋白三部分，然后通过改良双缩脲测定法对不同组分进行定量分析。

Aniline and nitro-benzene in air and water can be identified by nitro and phosphor detector with large diameter capillary in quantitative analysis method.

采用大口径毛细管色谱柱和氮磷检测器建立了水及空气中苯胺及硝基苯的定量分析方法，线性范围0 ~ 80μg /L，检测下限1μg /L，重现性好，结果令人满意。

However, relatively lower column utilization limits its application to the complex proteome isolation. In case of binding biotin molecules to a specific kind of functional groups existed in protein structure, and flowing the digested peptides over the affinity column in which avidin has been immobilized, biotinylated peptides can be selectively separated and the complicated system is simplified.

因此根据需要，变换生物素试剂与蛋白质反应的作用位点，就可以选择性地分离出不同的目标肽段，从而大大提高亲和色谱柱的使用效率，降低亲和分离的成本；结合乙酰化同位素标记技术，还可以建立多种针对不同目标肽段的特色定量分析方法，ICAT即是将同位素标记与蛋白质巯基生物素化亲和分离成功结合的一个范例。

MethodsThe amino acids and inorganic elements in fruits of Cassia fistula L. were determined qualitatively and quantitatively by amino acids analyzer and atomic absorption spectrometry. ResultsFruits of Cassia fistula L.

采用氨基酸分析仪和原子吸收光谱仪对腊肠树果实中的氨基酸和无机元素进行定性定量分析。

The main reasons and its correlated factors of the photoacoustic signal had been quantitatively analyzed based on signal absorption and photoacoustic rationale. It is found that the changed coupling coefficient of sound source and optical cavity modes which caused by the intensity of incident light absorbed by gas sample is the major reason, and a criterion was put forward for signal saturation depth estimating.

基于气体吸收和光声光谱原理定量分析了光声信号饱和的主要原因及影响因素，分析表明气体样本对入射光强吸收而导致的声源与本征共振模式的耦合系数改变是异常饱和的主要原因，并导出判定光声信号饱和深度的准则以用于判定高浓度气体饱和深度。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。