环 - 关于环的双语例句 - 环造句 - 语文书

为您找到1339个与“环”相关的双语例句：

The isocyanates can be obtained by the fluorination of nitrogenous cylic or acyclic molecules.
异氰酸酯可由含氯的环(或非环)状分子氟化而得.
They are acrylaldehyde hydration, ethylene oxide formylation and biological zymolysis methods.
即丙烯醛水合法, 环氧乙烷甲酰化法,生物发酵法.
Levocetirizine Dihydrochloride was prepared from benzoyl chloride by acidylation, hydrogenation, cyclization with an overall yield of 8.05 %.
以苯甲酰氯为原料,经酰化, 还原, 环合等反应合成左旋西替利嗪盐酸盐,反应总收率为8.05%.
In low temperature, reaction of ketone with sodium acetylide synthesized 1 - ethynyl - 2,3, 4,5 - tetramethyl - 2 - cyclopentene - 1 - ol; 1,2 - diphenyl - 2 - hydroxy - 3 - butine - 1 - one; 3,4 - diphenyl - 1,5 - hexadiine - 3,4 - diol and 3,4 - dipheny
报道了在低温条件下, 以邻二酮和α-环烯酮为原料与炔钠反应,合成了2,3, 4,5-四甲基-1-乙炔基-2-烯-环戊醇、1, 2 - 二苯基 -2 - 羟基 -3 - 丁炔 -1 - 酮、3, 4 - 二苯基 -1,5-己二炔-3,4 - 二醇和3,4 - 二苯基 -3 - 环戊烯 -1 -酮4种化合物.
It was prepared by the reaction of 12 H - dibenzo [ d , g ] [ 1,3 ] dioxocin - 6 - carboxylic acid with acetoxime.
由二苯并-1,3-二氧杂 - 环辛烷 -2- 羧酸经两步反应制得, 总收率70%.
Water soluble hydroxypropyl � � cyclodextrin was converted to acetonyl hydroxypropyl � � cyclodextrin via selective oxidation.
通过选择性氧化,将水溶性优良的羟丙基β环糊精转化为丙酮基羟丙基β环糊精.
The yields of other cyclic acetals were between 62.
并在此条件下合成了多种环缩醛,收率62.
The derivates of naphthalene, fluorene, pyrene, anthracene, acenaphthene and their application in biotechnology were reviewed.
对应用于生物工程的萘、芴、芘、蒽、苊等稠环芳烃衍生物作了概括介绍.
Children are quick to accustom themselves to new surroundings.
孩子们很快就会适应新环境.
Some animal and plant species cannot accommodate to the rapidly changing cond-itions.
某些种类的动植物不能适应迅速变化的环境。
Arrive two days early in order to acclimatize.
提前两天到达以便适应新环境。
Several things can be done to help the snake acclimate.
可以通过几件事帮助这些蛇去适应新环境.
The snowcoach concept in Yellowstone provides low-impact, low-pollution access.
在黄石公园里使用雪车这一想法，为人们提供了一种对环境低影响、低污染的游览方式。
To judge if the accident risk is acceptant, it is necessary to colligate those two aspect.
评价事故风险是否可以接受, 必须综合事故的环境影响后果和事故发生概率两方面的因素.
But , up to now the software development environment which is mature and acceptant has been absent.
但迄今为止,仍缺乏成熟的、易接受的agent软件开发环境.
Objective : To observe the effects of Di - dang Tang to uterus microcirculation of rats, anti - inflammation and abirritation.
目的: 观察抵当汤(桃仁、水蛭等)对大鼠子宫韧带微循环的影响及其镇痛抗炎作用.
Abiotic environment The nonliving factors of the environment that influence ecological systems.
影响生态系统的非生物环境因子.
Construct in what environment regardless, the views are all with the close contact of abiogenesis.
无论在什么环境中建造, 景观都与自然发生密切的联系.
Conservationists are mostly wedded to preserving diversity in nature.
自然环境保护主义者大多致力于保持物种的多样性。
Timbered cottages stood around a triangular green.
几所乡村小木屋环绕在三角形绿地周围。

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