“缩酮”的英语？

以单质碘为催化剂合成了环戊酮乙二缩酮.Cyclopentanone ethylene ketal was synthesized with I _ 2 as catalyst.传统的缩酮化、酯化反应工业上多采用浓硫酸作催化剂.Traditional ketalization and esterification reactions are usually catalyzed by concentrated acid in industr...

“缩酮”的拼音为：suō tóng...

涓涓溪流在阳光下闪闪发亮。The trickling stream glistened in the sunlight.冬雨过后，溪流湍急。After the winter rains, the stream becomes a raging torrent .溪流用水坝拦挡起来,形成了装饰性的湖泊.The stream was dammed up to form ornamental lakes....

罗兰? 巴特:《神话学》. 纽约: 希尔和王出版社, 1972年版.Barthes , Roland. Mythologies. New York: Hill and Wang, 1972.我相信你是考古学和神话学的权威.I believe you are quite an authority on things ancient and mythological.托尔金不认为他是在创造神话世界, 而是英国的古代神话学.In Tolkie...

n.回采[回收]矿柱v.抢夺( rob的现在分词 )，抢劫，掠夺，使丧失...

马当毒气...

bonbons的音标：...

Changing stresses bring about more cracking and rock deformation.不断变化的应力导致更多的断裂和岩石变形。To that extent they helped bring about their own destruction.他们正是如此推波助澜，导致了自己的毁灭。We are working to bring about closer political integra...

n.咯肢窝，腋窝( axilla的名词复数 )，叶腋...

safeguard的一般过去时为：safeguarded...

They may even have raced each other — but not regularly.他们甚至可能曾经相互比试过，只不过不是经常性的。He raced ahead up into the bush, barking and snarling.它嗥叫着冲向前，一头钻进了灌木丛。In the 10 years I raced in Europe, 30 drivers were killed.在我10年的欧洲赛车生...

landforms的音标：landforms的英式发音音标为：['lændfɔ:mz]landforms的美式发音音标为：['lændfɔmz]...

v.聘用( hire的过去式和过去分词 )，录用，雇用，租用...

Applications with a full curriculum vitae and two references should reach the Principal by June 12th.申请书连同完整个人简历和两份推荐信必须在6月12日以前送达校长处。I am enclosing my curriculum vitae together with my photograph.随函附上履历表和近照.Candidate sh...

marginal的近义词有：marginal, minor, negligible, minimal。下面这些形容词均含"不重要的，次要的"的含义：marginal：指处于边缘，幅度、范围小，故价值或重要性不大。 minor：多指与别的比较后显得不重要，或指较少、较小。negligible：指数量小，不重要，微不足道或可忽略不计。minimal：指最少、最低或最小。...

mould的一般过去时为：moulded...

accessorize的第三人称单数（三单）为：accessorizes...