常用

In this paper, the interaction between amino acids and denaturant of protein have been studied systematically by density and viscosity determination which are methods used usually in organic chemical engineering studies.

本文采用有机化工热力学常用的研究方法—体积和粘度法，系统地研究了水溶液中氨基酸与蛋白质变性剂的相互作用，主要内容和结果如下

Second, guanidine chloride is another important denaturant used commonly for protein unfolding. It is believed that guanidine chloride and urea have a similar mechanism of action.

其次，盐酸胍是常用于使蛋白质变性的另一种重要变性剂，盐酸胍分子与蛋白质分子相互作用的机理和尿素的情形具有相似性。

PCR is one of the common techniques in molecular biology, which can amplify nucleic acids through the cycle of denaturation, annealing and extension.

PCR是最常用的分子生物学技术之一，通过变性、退火和延伸的循环来完成核酸分子的大量扩增。

Classical solvent extraction is one important technology for the selective removal and enrichment of metal ions from aqueous solutions. However, it is not suitable for the separation of biological molecules such as protein and enzyme, because organic solvent can denature them.

溶剂萃取法是分析分离中最重要的方法之一，常用于金属的分离和富集，但对于生物大分子，加入有机溶剂会使其失活，因此经典溶剂萃取分离不适用，需研究新的体系。

According to Principle of quiescent sedimentation granula analysis, the densimeter method and the piette method are used to get the size grading of fine-grain soil and the errors of two methods are analyzed.

根据静水沉降颗粒分析法计算公式原理，分别采用了常用的密度计法和移液管法求取细颗粒土的粒径级配，分析了两种方法试验误差产生的原因，并证明密度计法较移液管法具有更简便、准确、节能的特点，建议尽量采用密度计法。

Densitometer is separations, seihan and business card printing and membership card in the making of the main instruments, this kind of measurement has always been a business card printing and membership card production of the most common form of objective assessment of quality, cheap, useful.

密度计是分色、制版和制卡和会员卡制作中的主要仪器，这种测量方式一直是制卡和会员卡制作工业最常用的客观评价质量的形式，密度计价格便宜，应用广泛。

In the meantime, the method difference between ab initio and density function theory are also compared and analyzed.

同时还比较分析了当前最常用的两种计算方法—-ab initio和DFT方法的特点及区别。

On the basis of Russenes method, the probability density function and membership function are deduced.

结合工程常用的Russenes岩爆判别法，推导出模型的概率密度函数和隶属函数形式。

In this chapter,we mainly give some basic theory of absorption, dispersion,dipole approximation and the equation of density matrix elements.

主要介绍激光光谱学的吸收和色散等基本概念以及常用的理论如偶极近似、密度矩阵方程等。

The results show that the effect of deoxidation of Ba alloy is better than that of the common deoxidizers.

实验表明Ba合金复合脱氧剂的效果要好于常用的脱氧剂，脱氧快、夹杂物聚集长大上浮容易。

The labia have now been sutured together almost completely.The drains and the Foley catheter come out at the top.

此刻阴唇已经几乎完全的缝在一起了，排除多余淤血体液的管子和Foley导管从顶端冒出来。

To get the business done, I suggest we split the difference in price.

为了做成这笔生意，我建议我们在价格上大家各让一半。