常用

Three methods for synthesis of coumarin were introduced in the article,and their advantages and disadvantages were compared.

对香豆素常用的三种合成方法进行了介绍，对其工业化生产的优缺点进行了对比，最终选定了水杨醛法，并给出了工艺流程图和操作步骤。

The method of coumarin synthesis using salicylaldehyde was selected,flow chart and operation process were studied in this paper.

对香豆素常用的三种合成方法进行了介绍，对其工业化生产的优缺点进行了对比，最终选定了水杨醛法，并给出了工艺流程图和操作步骤。

At present, the widely used dyes in biological analysis are rhodamine, BODIPY, cyanine, coumarin and so on.

目前，用于生物分析的常用染料主要有：罗丹明类，花菁类，BODIPY类及香豆素等。

In general, be courteous and use common sense.

一般情况下，要有礼貌和使用常用的词语。

A computed method of the bond formation power between atoms in crystal was presented with combination of both Yu′s "The empirical electron theory of solids and molecules" and Pauling′s covalence bond theory.

将固体与分子经验电子理论和 Pauling 共价键理论相结合，提出了计算晶体原子间成键能力的方法，并计算出常用的3 种触媒 Fe， Co， Ni原子间的成键能力分别为 2911 1， 2955 3， 2956 4。

In product qualiy judgement of sample Lests, when the objective indicators get its values required destructive tasting, it is usually use the covariant index from non-destructive testing to forecast.

在产品质量判定的抽样检验问题中，当目标指标需用破坏性试验才能得其值时，更为常用的足用非破坏性试验可得量值的协变指标量来预报它。

For example, when "; of the cropland that bake fertilizes, the " that the " that raises the " intercrop "" with commonly used utilization rate of plant light energy to cover "; to raise crop yield applies farmhouse fat "; to promote rice root system to breathe wants reasonable, fertilize cannot too much, meet otherwise " burns seedling "

例如，提高植物光能利用率常用的"间作""套作"；提高农作物产量的"施农家肥"；促进水稻根系呼吸的"烤田"；施肥时要合理，一次施肥不能太多，否则会"烧苗"

Commonly used There pigskin, cowhide, sheepskin and so on.

常用的有猪皮、牛皮、羊皮等。

Ty,iron and steel.With the department of the industry, the require of the crasher is more and more higher.

在工业应用中常用的破碎机类型有：颚式破碎机、圆锥破碎机、辊式破碎机、冲击式破碎机，磨碎机等。

Test results show that there are evident differences among creepage distance utilization coefficients of different types of insulators.

对华东电网常用的几种绝缘子的积污特性、爬电距离有效利用系数进行了分析和计算，同时，在污秽试验的基础上，对几种常见的绝缘子试品进行了长串耐压试验，试验结果表明，不同类型绝缘子的爬电距离有效利用系数存在较大差异。

We have no common name for a mime of Sophron or Xenarchus and a Socratic Conversation; and we should still be without one even if the imitation in the two instances were in trimeters or elegiacs or some other kind of verse--though it is the way with people to tack on 'poet' to the name of a metre, and talk of elegiac-poets and epic-poets, thinking that they call them poets not by reason of the imitative nature of their work, but indiscriminately by reason of the metre they write in.

索夫农 、森那库斯和苏格拉底式的对话采用的模仿没有一个公共的名称；三音步诗、挽歌体或其他类型的诗的模仿也没有——人们把&诗人&这一名词和格律名称结合到一起，称之为挽歌体诗人或者史诗诗人，他们被称为诗人，似乎只是因为遵守格律写作，而非他们作品的模仿本质。

The relationship between communicative competence and grammar teaching should be that of the ends and the means.

交际能力和语法的关系应该是目标与途径的关系。