Taking p chlorotoluene as raw material , 2,4 Dichlorotoluene was synthesized via catalytic chlorination process.以对氯甲苯为原料, 经催化氯化制取2,4二氯甲苯.In the reaction of chlorination, carbon tetrachloride was used agent, and chlorine ...
Chlorination is carried out with Nhaloamines and sulfuric acid.氯化是用N- 卤胺和硫酸.The practice of chlorination has become so widespread.氯化法在实践中已得到广泛应用.The process of 2 - chloropyridine chlorination synthesis by pyridine and ap...
They were the scourge of God upon the aborigines of the continent.他们是上帝降在美洲土著当中的灾难.The visitor can ponder over the boomerangs used by aborigines at the time of Cook.来访者可以琢磨琢磨土著人在库克时期用的回飞镖.From the turn of the century onw...
只需要很小的一滴就可以了。It's only necessary to use just a very small blob.我一滴眼泪也没掉。I didn't shed a single tear.他从瞎了的眼睛里擦去了一滴泪水。He wiped a tear from his sightless eyes....
Revenge leads to a self-perpetuating cycle of violence.怨怨相报会导致永不休止的暴力。It'set out to eradicate heresy, and ended by perpetuating it.它的目的只是要根除异端邪说, 结果却巩固了异端邪说.She plodded in her perpetuating circle of stove, worktable...
Making Boolean calculating to a component, at first execute union, then subtracting.对组合体执行布尔运算时, 先加后减.The collegial panel shall execute the decision of the judicial committee.审判委员会的决定,合议庭应当执行.We are going to execute our ...
You get the best view over Bergen the fjords and the surrounding pine - covered mountains the belvedere.在观景台上能看到卑尔根、海湾及四周葱葱群山最好的风光.Do you know if we've passed Bergen Street yet?请问卑尔根大街是不是已经过了?He was supposed to go b...
方法: 采取凝胶过滤方法分别提纯上述花粉变应原.METHODS: The pollen allergens were purified by gelatin filtration.目的从樟树花粉中克隆泛变应原基因.Objective To clone new panallergen genes from pollen Cinnamomum camphora.观察125例变态反应性鼻炎变应原鼻内激发试验前后鼻阻力变化.Allergen n...