英语释义

• a chemical reaction between two compounds in which parts of each are interchanged to form two new compounds (AB+CD=AD+CB)

• a linguistic process of transposition of sounds or syllables within a word or words within a sentence

片语

space metathesis空间置换

metathesis reaction复分解反应

metatheses metathesis的复数

metathesis method置换方法

olefine metathesis烯烃复分解反应

chemical metathesis化学交换法

exchange交换；交易；兑换

commutation减刑；交换；经常来往；代偿

cross metathesis分子间交叉复分解反应

simple metathesis简单换位

metathesis ventilation置换通风

英汉例句

• ring closing metathesis (rcm) of dienes to cycloalkene provides an important tool for c-c double bond formation catalyzed by metal carbene.

  关环转换反应是形成碳碳双键的重要反应之一，即双烯化合物在金属碳烯催化下关环得到环烯类化合物。

• the mechanism of the alkene metathesis reaction, in which carbon-carbon double bonds are 「cleaved」 to give all possible alkenes, was unknown in the early 1970's, and no catalysts had been identified.

  在十九世纪七十年代初还鲜为人知的烯烃复分解反应，其反应机理就是碳碳双键「断裂」形成所有可能的烯烃，当时，更没有认识到合适的催化剂。

• recent advances in ring closing metathesis (rcm) reaction, including olefin and enyne metathesis reaction are reviewed.

  综述了近几年来关环复分解（rcm）反应的研究新进展，包括了烯烃、烯-炔的rcm反应。

• write a program that finds all of the metathesis pairs in the dictionary.

  协议额函数来找到词典中所有的这样的交换对。

• catalyst development over a period of more than thirty years led in 2005 to the nobel prize in chemistry 「for the development of the metathesis method in organic synthesis.」

  催化剂经过三十余年的发展终于因「有机合成中复分解反应方法的进展」在2005年获得了诺贝尔化学奖。

• reduction - metathesis method for preparation of strontium carbonate from celestite is developed.

  提出还原-复分解法制备碳酸锶的新工艺。

• ring-opening metathesis polymerization(romp) is one of the most important part in the field of polymer synthesis.

  开环易位聚合反应是高分子合成领域引人注目的目标。

• polydicyclopentadiene (pdcpd) is a novel engineering material synthesized by reaction injection molding (rim) method and such reaction mechanism is ring-opening metathesis polymerization.

  聚双环戊二烯是采用反应注射成型工艺合成的一种性能优良的新型工程材料，是通过开环易位机理形成的聚合物。

• the mechanism of c_4-olefin metathesis to produce propylene and the re-based catalysts for the metathesis were introduced.

  介绍了c_4烯烃歧化的基本原理以及歧化反应用负载型铼基催化剂。

• 「 the lecture will briefly discuss the metathesis reaction and show why the nobel committee chose to call it an example of 」green chemistry.

  本演讲概括讨论复分解反应，并且展示为什么诺贝尔委员会把该反应称为「绿色化学」的范例。

• metathesis reaction is not only one of the major reactions in secondary school chemistry teaching, but a typical redox reaction.

  置换反应是中学化学中的主要反应，也是典型的氧化还原反应。

• the base principle, key technology, characteristic and progress on synthesis of ceramic powders by solid-state metathesis reactions are described.

  本文扼要地介绍了固态复分解反应法制备陶瓷粉末的基本原理、关键技术、特点及其研究进展。