专业英语复习句子专业英语复习句子.doc

1.This does not mean，however，that natural products or other agents are less important. 但是，这并不意味着，天然产品或其他并不太重要。 Table 1 gives an overview of the different methods for obtaining pharmaceutical agents. 表1给出了获取药剂的不同方法的概述。Fermentations are carried out in stainless steel fermentors with volumes up to 400 m3. 发酵是在量高达400立方米不锈钢发酵罐的。青霉素G，发酵200小时后，细胞。desired active agents are isolated from the filtrate by absorption or extraction processes. 所需活性剂是吸收或。 Depending on their production or origin pharmaceutical agents can be split into three groups。 根据药剂的产物或者来源，他们可以分为三种类型。 7. Dextran itself，with a molecular weight of 50,000 ~ 100,000，is used as a blood plasma substitute. 葡聚糖本身分子量5万10万，是用作血浆代用品。.In this way human insulin is obtained totally indepently from any pancreatic ?material taken from animals. 通过这种方式获得的人类胰岛素是完全不依赖于动物的胰腺组织。9..The insulin ester is separated , hydrolyzed to human insulin and finally purified by chromatographic procedures . 胰岛素酯被分离、水解为人胰岛素，最后通过色谱的方法被纯化。 10..Understanding also makes it possible to recognize contamination of the agents by intermediates and by- products. 理解合成路径有助于辨别中间体和副产物给药剂带来的污染。 11..For this reason it is approprite somewhere in this book to illusrate a tree of especially important intermediates. 基于这个原因，它在这本书的某个地方说明重要中间体的结构是合适的。 12..In a similar way this is also true for the intermediates based on the industrial aromatic compounds toluene, phenol and chlorobenzene. 用类似的方式，以工业芳香族化合物甲苯、苯酚和氯苯为基础来合成中间体也是正确的。 13..This is advantageous because they can then easily be separated from the reaction medium and recycled for further use. 由于他们可以很容易地从反应介质中行被分离和回收再利用，这是他们的优势。 A careful description and definition of all stored intermediates and products is needed. 仔细描述和定义所有储存的中间体和产品是必要的。 15.Special care has to be taken to avoid cross-contamination by other products what can be effected by good cleansing of used apparatus. 由于使用过的仪器的清洁度对其它产物的影响，所以，特别小心，注意避免交叉污染。 16.All these activities,many of which are interdependent,need to be carefully planned and co-ordinate. 所