n. (pl. -ses ) 1.【语言学】换位(作用)；换位构成的词。 2.【医学】病变移位法。 3.【化学】复分解，置换(作用)；易位(作用)。 adj. -thetical
a chemical reaction between two compounds in which parts of each are interchanged to form two new compounds (AB+CD=AD+CB) 同义词：double decomposition, double decomposition reaction,
a linguistic process of transposition of sounds or syllables within a word or words within a sentence
例句与用法
1.
Indirect metatheses law to synthesize and characterize zinc gluconate 间接法合成葡萄糖酸锌及其表征
2.
Ring opening metathesis polymerization romp 开环易位聚合
3.
Abstract : the base principle , key technology , characteristic and progress on synthesis of ceramic powders by solid - state metathesis reactions are described 文摘: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。
4.
A series of copoly ( olefin - co - ester ) s were synthesized and characterized by starting from cyclooctene , cyclooctadiene or nobornene with ethanediol di ( 10 - undecenoate ) via metathesis copolymerization and hydrogenation reaction 摘要通过环辛烯、环辛二烯和降冰片烯-十一烯酸乙二醇二酯的易位共聚合及氢化反应合成了烯烃共聚酯。
5.
Considering the monotony and regularity of euclid arithmetic , the paper proposes a new multiple attribute decision making approach based on the ordinal euclid arithmetic , and the monotony , regularity and metathesis immutability of the ordinal euclid arithmetic are proved too 基于算子有序性的构建思想，本文提出并构建了基于有序欧几里德算子的区间数多属性决策算法模型，证明了有序欧几里德算子的单调性、齐次性和幂等性。
6.
The industrial manufacturing technique , the trend of development of neohexene , and the characteristics of these production technique were reviewed and analyzed in the paper , particularly about the selective dimerization of isobutylene and metathesis of - diisobutylene with ethylene were introduced 摘要对新己烯生产技术的现状和今后的发展趋势进行了综述，分析了由异丁烯和乙烯生产新已烯的技术特征，讨论了烯烃二聚工艺和催化剂、烯烃复分解工艺及相应的催化剂，指出了各种工艺的优势和不足。
7.
The free - phosphine carbene ruthenium complex [ 1 , 3 - bis ( 2 , 6 - dimethylphenyl ) - 2 - tetrahydroimidazol [ ( c5h5n ) 2 ( cl ) 2ru = chph ( 8 ) was prepared by the reaction of [ 1 , 3 - bis ( 2 , 6 - dimethylphenyl ) - 2 - tetrahydroimidazol ] ( pph3 ) ( cl ) 2ru = chph ( 7 ) with pyridine and used as a highly effective catalyst for the cross metathesis of acrylonitrile with allylbenzene 摘要设计了由1 , 3 -二（ 2 , 6 -二甲基苯基） 2 -四氢咪唑基苯亚甲基三苯基膦二氯合钌( 7 )和吡啶反应生成无膦型金属钌卡宾化合物1 , 3 -二（ 2 , 6 -二甲苯基） 2 -四氢咪唑基苯亚甲基2 -吡啶基二氯合钌( 8 ) ， 8作为高效催化剂用于丙烯腈和烯丙基苯的交叉交互置换反应。
8.
Second , the paper in - depth discuss the reinforce foundation operation mechanism of technique of composite grouting , including spray incise action of high pressure spray flow to soil , mill metathesis concretion action , and penetrate , split , crush action of serum to soil , etc . third , the paper in - depth study design calculate of composite grouting , design of composite grouting technic parameter 其次，本文对复合注浆法加固地基的作用机理进行了深入的探讨，包括高压喷射流对土体的喷射切割作用、浆液与土的搅拌置换固结作用以及浆液对土体的渗透、劈裂、挤密作用等问题。第三，本文对复合注浆的设计计算、注浆技术参数的设计进行了深入的研究。
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