An efficient palladium-cocatalyst system for vinylation of unsaturated carboxylic acid has been exploited,among which aliphatic amines(ALA)are firstly used as cocatalysts.
以醋酸钯/邻菲洛林/脂肪胺为催化体系,丙烯酸和乙酸乙烯酯为原料,通过乙烯基交换反应制备丙烯酸乙烯酯。
单词 | among which |
释义 |
among which
英语例句库
An efficient palladium-cocatalyst system for vinylation of unsaturated carboxylic acid has been exploited,among which aliphatic amines(ALA)are firstly used as cocatalysts. 以醋酸钯/邻菲洛林/脂肪胺为催化体系,丙烯酸和乙酸乙烯酯为原料,通过乙烯基交换反应制备丙烯酸乙烯酯。 Grainstones are the main part of the section, among which the oolites, intraclast limestones and most bioclast limestones are cemented by sparry calcite. 颗粒灰岩在剖面中占绝大多数,其中,鲕粒灰岩、内碎屑灰岩和多数生物碎屑灰岩均为亮晶方解石胶结。 Its existence is due to its peculiar traits, among which the most important ones are particular autorhythmicity, self coerciveness, universal penetrability and lofty ideality. 道德力的主要特质有:独特自律性、自我强制性、普遍渗透性和崇高理想性。
原声例句
Vox 观点 " She is older than the rocks among which she sits." “她所象征的意义,比环绕在她身旁的石头还要古老。” CRI在线 2020年5月合集 Around the globe, over 105,000 confirmed cases have been reported, among which around 3,600 have died. 在全球范围内,已报告了超过10.5万例确诊病例,死亡病例3600例。 经济学人(汇总) Drinks companies must also reckon with a small army of health advocates, among which Ms Nestle is a major—general. 饮料公司还得去对付那些以奈斯特为首的健康军团。 美国原版语文第六册 He had on a loose sort of coat, mended with different-colored rags, among which the blue and russet were predominant. 他穿了一件宽大的外套,上面补着各色补丁,其中蓝色和黄褐色补丁尤为显眼。 海底两万里(原版) In the center stood a huge table covered with pamphlets, among which some newspapers, long out of date, were visible. 图书室中央放一张大桌子,上面摆满了许多小册子,其中有些是过时的报纸。 远大前程(原版) These were the surroundings among which I settled down, and applied myself to my education. 这些是我安顿下来的环境,并把自己运用到我的教育中。 全球玩乐指南 There are more than 50 buildings among which Sully-sur-Loise Chambord, Chenonceau, and Azay- le Rideau stand out. 共有 50 多座建筑,其中以香波堡 (Chambord)、舍农索 (Chenonceau) 和阿泽勒·里多 (Azayle Rideau) 等建筑最为突出。 海底两万里(原版) It consists of a number of islands, islets, and reefs, among which we noted the islands of Viti Levu, Vanua Levu, and Kadavu. 这群岛是由很多小岛如维蒂岛、万奴岛和甘杜朋等岛组成的。 北外1班御用 高级口译 China has a workforce of nearly 900 million, among which 170 million have received higher education or training in professional skills. 中国拥有近9亿劳动力,其中1.7亿人接受过高等教育或专业技能培训。 薛非考研作文 The phenomenon is thought-provoking in more ways than one, among which the following three are of special significance. 这一现象的发人深省不止一处,其中以下三点具有特殊意义。 走进哈佛大学 There are many reasons for this, among which a very important one is that private universities receive substantial donations from many philanthropists and alumni. 原因有很多,其中一个重要原因是私立大学从很多慈善家和毕业生那里得到了大量捐助。 白鲸记 This rampart is pierced by several sally-ports for the convenience of ships and whales; conspicuous among which are the straits of Sunda and Malacca. 这道壁垒被几处隘口洞穿,便于船只和鲸鱼进出;其中最显眼的是巽他海峡和马六甲海峡。 Amazing China 纪录片(视频版) On the island there are many strange rock formations, among which the most famous are the Banyang Stone Sail and the God of Haitan. 岛上的奇石星罗棋布其中最出名的是半洋石帆和海坛天神。 薛非考研作文 The phenomenon can be read from many perspectives, among which I would like to name three most significant ones as follows. 这个现象可以从很多角度来理解,其中我想列举三个最重要的观点如下。 全球玩乐指南 The palace grounds are made up of rectangular courtyards adorned with fountains And flowers, among which is The Courtyard of the Lions. 宫殿场地由装饰着喷泉和鲜花的长方形庭院组成,其中包括狮子庭院。 薛非考研作文 The phenomenon can be read from many a perspective among which I would name three most significant ones as follows. 这个现象可以从很多角度来理解,其中我将列举三个最重要的观点如下。 薛非考研作文 The value of role models can be seen from many a perspective, among which I would namethree most significant ones as follows. 榜样的价值可以从很多方面来看,其中我将列举三个最重要的方面。 薛非考研作文 Several factors can be found to account for the phenomenon, among which I would name three most significant ones as follows. 可以找到几个因素来解释这种现象,其中我将列举三个最重要的因素如下。 美国历史 It was waged, in the main, by secret organizations, among which the Ku Klux Klan and the White Camelia were the most prominent. 它主要是由秘密组织发动的,其中最著名的是 Ku Klux Klan 和 White Camelia。 乌托邦 They are a rude, wild, and fierce nation, who delight in the woods and rocks, among which they were born and bred up. 他们是一个粗鲁、狂野、凶猛的民族, 他们以森林和岩石为乐, 他们在其中出生和长大。 |
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