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The organic chemistry studying the organic compounds composition、structure、nd change rules of it.It is the theoretical base of organic chemistry industry.

有机化学是研究有机化合物的组成、结构、性质及其变化规律的科学，是有机化学工业的理论基础。

A brilliant sense of composition as well as for covering other's material, whatever the source, combined with an excessive love for French chanson (the main weak spot being an evident admiration for the master Gainsbourg).

辉煌的意识组成，以及涉及其他的材料，不管来源，加上过度的爱法国尚松（主要弱点是明显的钦佩主斯博格）。

In this article, working principle, composition of control circuit and working characteristic curve are discussed.

文章论述了电动机软起动控制的工作原理，控制电路组成，工作特性曲线。

Then, in the direction of the characteristic of the signal device fault, it works on the course model for realizing fault diagnosis, the composition of the expert system of fault diagnosis, and the method to develop a real system.

然后，针对信号设备故障的特点，对故障诊断实现的过程模型、故障诊断专家系统的构成及其实现方法进行了研究。

A method of killing flying insects which method comprises spraying into the air in which insects are flying liquid droplets of an insecticidal composition, a unipolar charge being imparted to the said liquid droplets by double layer charging and charge separation during spraying, the unipolar charge being at a level such that the said droplets have a charge to mass ratio of at least +/-1x10-4 C/kg.

一种杀死飞虫的方法，该方法包括：向具有飞虫的空气中喷射杀虫剂组合物液滴，在喷射过程中通过双层充电以及电荷分离而向所述液滴施加单一极性的电荷，单一极性的电荷处于使所述液滴具有至少＋／－1×10-4C/kg的电荷／质量比的水平。

An aerosol spray device which is capable of imparting a unipolar charge by double layer charging and charge separation to liquid droplets of a composition sprayed therefrom has a spraying head in the form of an insert in an actuator, the spraying head having a bore through which liquid is expelled having an outlet, preferably with a tortuous periphery, having an L/a ratio of at least 8 (preferably at least 10) where L is the length of the periphery defining the bore outlet in mm and a is the cross-sectional area of the bore outlet in mm2 and the apparatus being constructed such that the droplets are expelled from the spraying head at a flow ratio of at least 0.4 (preferably at least 0.5) grams per second and have a charge to mass ratio of at least +/-1x10-4 C/kg.

本发明还提供了一种喷射装置，它能够通过双层充电和电荷分离而向要喷出的组合物液滴施加单一极性的电荷，该喷射装置具有一个喷头，该喷头制成为致动器中的插入件的形式，喷头具有一个孔腔，液体能够通过该孔腔从装置中排出，该孔腔具有一出口，该出口最好具有曲线周边，并且L/a比率至少为8，其中L是以mm为单位的确定孔腔出口的周长，a是以mm2为单位的孔腔出口的横截面积，该装置构造成使得液滴在至少每秒0.5克的流动速率以及具有至少＋／－1×100C/kg的电荷／质量比的状态下从喷头排出。

In order to research on different stable isotope composition in the different beef tissues, as well as the breed, longissimus muscle, psoas major muscle, leg muscle, buttock muscle, cattle tail hair, blood, liver and feed were collected, which were belonging to simmental and charolais cattle under the same culture conditions.

为研究牛不同组织器官中不同稳定同位素的组成情况以及品种对同位素组成的影响，采集西门塔尔牛和夏洛来牛的里脊、外脊、腿部肌肉、臀部肌肉、牛尾毛、血液、肝脏、饲料等样品。

The paper discusses the inner relationship between Chateaubriand's unique doctrine of religion and his composition.

夏多布里昂独特的宗教观与其文学创作有紧密的内在关系。

Most cataracts are caused by a change in the chemical composition of the lens.

大多数白内障都是因为晶状体内的化学成份改变引起的。

Chemical formula :Expression of the composition or structure of a chemical compound.

化学式：化合物的组成或结构的任何一种表达式的总称。

"Second Life is remarkably easy to work with, and is very popular,"

"第二次生命是显着容易的工作，并且很受欢迎，"

For example, we usually assume that materials are homogeneous and isotropic and free of internal defects or flaws.

为了得到适合有限元分析的模型，我们必须经过如图2所示的简化步骤。