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The isomerization reaction of propylene oxide to produce allyl alcohol catalyzed by basic lithium phosphate was studied.

研究了环氧丙烷在碱性磷酸锂催化作用下异构化生成烯丙醇反应过程，考察催化剂的制备条件，异构化温度对催化性能的影响，以及催化反应机理和动力学特性。

The products are methyl vinyl ether (cis- and trans-), allyl alcohol and propen-2-ol.

计算得到的丙酮分子的5个异构化反应通道分别对应3种异构化产物，乙烯甲基醚、丙烯醇和1-丙烯-2羟基。

Considering the experimental results, we start from plant and animalcule polysaccharides'structure, pharmacological activity and the structure activity relationship of polysaccharides, with emphasis on polysaccharides'macromolecule's action in solution、chain conformation 、the characters of solution、molecular weight and polysaccharides'interaction.Combining other reports on polysaccharides compounds, we have analyzed the mixing rules of polysaccharides , and brought out five possible approaches of polysaccarides mixing.

结合实验结果，本论文以植物多糖、微生物多糖的结构、药理活性以及构效关系为基础，以多糖高分子在溶液中的行为、链构象、溶液性质、分子量以及多糖在溶液中的相互作用为重点，结合大量的复合多糖研究报道，分析归纳了多糖配伍复合的规律，提出了5 个多糖复合的可能途径。

The geometric structures of the ground states of anisole and anisole cation also are optimized at HF/6-31G level, furthermore, the stable structure is acquired. In addition, we also calculate the energy of anisole and its main fragment ions.

应用高斯软件采用HF/6-31G 方法对苯甲醚分子和苯甲醚阳离子基态的几何构型进行优化得到其稳定构型，并计算了苯甲醚分子离子及其初级解离产物的能量。

An interesting observation is the formation of antiphase boundaries on the 2x2-Ga phase, which provides further evidence for the parallel dimer model of the 2x2-Ga reconstruction.

且发现2x2再构中存在zigzag的反相畴界，这个结果直接证明了2x2再构的平行dimer模型。2。

Being contrastive construction, the particular phrase structure has the requirement for the pair of words with contrasting or opposing meanings, which makes the contrastive construction and antonymous pair associated so closely in the Chinese language.

三作为对比构式，特定的短语结构要求能填入空位的词是具有相反或相对意义的词对，这是对比构式与反义词对联系紧密的原因。

This paper deals with this problem in terms of syntag- matic and paradigmatic relations of words to be used, co-occurence and se- lectional restrictions of words or phrases in a disconrse, association and collocation of synonymous and antonymous structures, and finally, associa- tion and collocation centering on the prominence of a given theme.

本文论述了句段的表示、所使用的词的词形变化、结伴关系、词或短语的选择限制、词的异构同义和同构异义等问题，在这些问题中，词的组织与搭配都处于突出的中心地位。

The change of adiabatic temperature was small during coupling isomerization with aromatization of hexene-1,because both re.

提出了催化裂化汽油中己烯-1为代表的异构化和芳构化偶合反应的化学平衡模型。

ZSM-5 molecular sieve is widely used as catalyst for aromatization, catalytic cracking and isomerization.

ZSM-5分子筛是应用广泛的催化体系，常用于烷烃的芳构化、催化裂化及异构化。

ZSM-5 molecular sieve was widely used as catalysts for aromatization, catalytic cracking and isomerization.

ZSM-5分子筛是应用广泛的催化体系，常用于烷烃的芳构化、催化裂化及异构化。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。