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.In low temperature, reaction of ketone with sodium acetylide synthe...

“环美酚”的英语可以翻译为：cyclomenol ...

它仍然是在反应中生成过渡状态的杂环的实例.It represents an example of a heterocycle being formed as transient species....

“索环”的拼音为：suǒ huán...

“环顾”的拼音为：huán gù...

“花环”的拼音为：huā huán...

“上循环”的拼音为：shàng xún huán...

我认为克里舍南在比赛的各个环节都有超常的发挥。I think Krishnan excelled himself in all departments of his game.这就使比赛精简到最基本的环节。This has stripped the contest down to its essentials.这些问题显然已成为了和平进程中的薄弱环节。These issues have created a stark fault lin...

“垫环”的英语可以翻译为：acking ring，grummet，grommet，mantle ring ...

这些环状物各自有不同的振动频率.The rings resonate at more than one frequency each.受到烙铁的霹雳影响之后,可辩认出不吉利的环状物.The after - affects of this Iron Thunderbolt have an ominously recognizable ring.这些环状物的产生仍然很神秘.The origins of these rings still r...

城市灰尘是城市环境学研究的对象之一.Urban dust constitutes an important problem in urban environmental science.这一计算方法不具有环境学和生态学方面的意义.The budgetary method doesn't have the meaning of environmental science and ecology.作为一名曾经的商人, 他现在已经成...

“环境”的拼音为：huán jìng...

马车都用鲜花装点，由佩戴花环的几匹马拉着。The wagons were decorated with flowers and pulled by garlanded horses.运动员和官员们戴着花环。Players and officials were garlanded with flowers.她把这些花编成花环.She twined the flowers into a garland....

“环晶石”的拼音为：huán jīng shí...

“环带”的英语可以翻译为：annule，girdle，annulus，[动] （生殖带） clitellum，zone ...

“微环礁”的英语可以翻译为：microatoll ...

“超环面”的拼音为：chāo huán miàn...

“铁循环”的英语可以翻译为：ferrikinetics，ferrokinetics ...

“切环槽”的英语可以翻译为：fraising （在活塞上） ...

在这种结构中, 所有类型的训练符号都在每个天线上循环地发送.In cyclic training structure, all types of training symbols are transmitted cyclically at each antenna....

“环顾”的英语可以翻译为：look about [around]，look round ...

看见这个 么 ?嘴唇上环状的血印?See these? Thin rings of blood on her lips?一片通常为环状的 、 用作存储器的磁性材料.A piece of magnetic material , usually toroidal in shape, used for storage.编程经常位于彼此有关而互联成环状的思想形态当中.The programs are often in loops of thou...

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%.It was prepared by the reaction of 12 H - dibenzo [ d , g ] [ 1,3 ] dioxocin - 6 - carboxylic acid with acetoxime....

“微循环”的英语可以翻译为：[医] microcirculation ...

一位男孩在追赶一群鸽子在圆柱状物镶环轮状的圣彼得鲁广场,设计者是伊恩?洛伦佐?伯尔尼.Peters Square A boy chases pigeons in column - ringed Piazza San Pietro, designed by Gian Lorenzo Bernini....

“炮尾环”的英语可以翻译为：eech ring ...

在1,2--二亚甲基环丁烷中并不发生这种现象.This phenomenon does not occur with 1 - 2 - dimethylenecyclobutane.环丁烷主要成 “ 蝶式 ” 构象存在.Cyclobutane exists predominantly in a " butterfly " conformation.方法以1, 2- 二氰基环丁烷为原料,经还原 、 缩合、环合三步反应得到洛铂.Methods...

“锚环”的英语可以翻译为：[机] anchor ring ...

“环形山”的英语可以翻译为：crater，ring mountain ...

“环沙酮”的英语可以翻译为：[化] cyclexanone ...