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The analytical results have shown that p ro ducts mainly consisted of some monosubstituted, disubstituted and a few trisub stituted naphthalenes. Except the low activity of HZSM-5 catalyst, all other z eolite catalysts have higher activity. HY and Hβ catalytic activities were the highest, and their naphthalene conversions attained to 79.12 and 55.79 percent respectively, but their selectivities for 2-isopropylnaphthalene, 2,6-diisopropylnaphthalene(2,6-DIPN) and 2,7-diisopropylnaphthalene ( 2,7-DIPN) were too low. ZM catalysts had good activity and much better selecti vity, especially for ZM4-3, of which its 2,6-DIPN/2,7-DIPN ratio was 2.97. Th er efore, some zeolite catalysts are recommended for shape selective isopropylat ion of coal tar naphthalene.

研究结果表明,煤焦油萘异丙基化产物主要由一取代萘、二取代萘以及少量三取代萘组成;除HZSM-5活性较低以外,其它催化剂均有较高的反应活性,其中HY和Hβ反应活性最高,萘转化率分别达75.15%和55.96%,但β位产物的选择性较差;ZM类催化剂既有一定的活性,又有较高的β选择性,是萘择形异丙基化反应理想的备选催化剂。

The conclusions are as follows:(1) Neologisms in each Huayu region can be classified into two major categories:self-originated and others-originated,among which the new-born words are "absolute new words" and the inherited word are "relative new words",and there are also others-originated elements in the morphemic and sense systems of new words;(2) Variation can be seen in the morpheme,formation,building and sense of new words in Huayu regions,besides individuals of new words;(3) Aggregation of current new words and compound words with one common morpheme and a same construction,together with the aggregation of synonyms and that of different senses in polysemies,reflect the relevance of the systems of new words in Huayu regions in their variation;(4) Regular participation of hinting sense of a formation element in forming and building new words is an important way of producing new sense of morpheme,and an important reason for the current emergence of words with more than one new senses;(5) Compared with ordinary words,the productivity of ways of word formation in forming new words both in general and of a particular class will change and new ways of word formation appear in Huayu regions;(6) The semantic collocation of the verbal morpheme of new verbs in a phrase has a great influence on the location of its structural center,and the complex syntactic behaviors of new verbs are related to the different processes of argument integration;(7) The processes of building new words with the same meaning differ in levels of approaches to motivation cognition,perspectives of motivation cognition,morpheme motivation and morpheme expression,etc.;(8) The lexical interaction in Huayu regions results in lexical subsystem intersections of current new words across two,three and four regions.

本文的主要结论是:(1)各华语区新词均可分为&自源新词&和&他源新词&两大类,其中的新生词和传承词分属&绝对新词&和&相对新词&,新词语的词素、词义系统中也含有他源成分;(2)除词语个体外,华语区新词在词素、构词、造词、词义等方面均体现了某种程度的变异:(3)通用词语聚合、同素同构词聚合、同义异形词聚合与一词多义聚合集中反映了各华语区新词语系统在变异中的关联;(4)构词单位经常提示词义参与构造新词是产生新语素义的重要途径,也是当代多新义词现象的重要成因;(5)相对于一般词语,构词方式在新词语中的总能产性和在某一词类中所体现的能产性都有所变化,华语区也产生了新的构词方式;(6)新动词的动素在短语中的语义搭配对结构核心的位置有很大影响,新动词的复杂句法表现与不同的论元整合过程有关;(7)同义新词造词过程的差异包括理据认知途径、理据认知角度、词素理据和词素表达等不同层面;(8)华语区的词汇互动形成了双区、三区和四区通用新词等词汇子系统交集,作为华语核心,普通话所含纳的通用词语多于各区域变体。

Finally the application of the homemade ODS for MSPD and the economical availability of the product was evaluated. Results show as the following: 1. It is a simple method for the preparation of a bonded octadecyl phase which has large particle and high extent of coverage of the bonded phase.

研究结果表明:①采用大粒径无定形硅胶为基质,选择十八烷基三氯硅烷为硅烷化试剂,完整地合成了一种大颗粒、高表面积的ODS键合相,合成的ODS可作为基质固相分散MSPD的固相分散剂,用于样品的前处理。

SCs divided and proliferated in three-dimensional fashion, demonstrating long olivary, triangular or long fusiform shape with obvious prominence. Furthermore, The SCs connected end-to-end with each other or aligned in clusters and the protein granules secreted on cellular surface were also showed.

雪旺细胞分裂增殖呈三维生长,细胞形态多为长梭形,纺锤形或长三角形,突起显著,细胞呈端对端的相互连接或排列成束状或栅栏状,细胞表面蛋白颗粒分泌良好。

The E optotype on the chart had 3 limbs of equal length. A regular geometric progression of optotype size and distrbution was employed to arrange 11 lines with 4 optotypes on each lines.

采用三划等长的E形视标,视标大小及排列采用均匀的几何增率,每行有4个视标,共11行,每两行视标变化进率为。

However, longer lexical decision times were obtained when nonword foils were orthographically similar to real words than that were orthographically dissimilar to real words.

实验二、三、四考察了当干扰非词均由真字构成时非词与真词的形音相似性对词汇决定过程的影响。

It is determined by transmited light microscopy that the abundant amorphous organic matter is contained in the lacustrine dark mudstones of the Palaeogene Wengchang and Enping Formations.

普通透射光镜观察结果表明,珠三坳陷早第三纪文昌组和恩平组的湖相暗色泥岩中都含有丰富的无定形有机质。

A coarse annual with some leaves deeply and palmately 3-cleft or 5-cleft.

粗糙的一年生植物,掌形的叶子有三个或五个裂缝。

There was an independent and well-developed Golgi complex dorsal to the nuleus and parabasal filaments.

体前的毛基体复合体由鞭毛周管、管壁内&C&形盾结构及5个毛基体三部分组成。

Leaves usually pedately compound, rarely ternate, not peltate; carpels 2, connate at base.

叶通常鸟足状复合,很少三出,不盾形;心皮2,在基部合生。

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推荐网络例句

By the time of its fall, most of the prisoners were writers who had written against the corruptions of the government.

到它被攻陷的时候,里面多数的犯人是写了反对政府贪污文章的作家。

The most obvious variation to ovum morphological character was that the color was changed from light green to sepiaceous in embryonic development, and all the ovums were almost hatched after 96h.

在胚胎发育过程中卵的形态特征最明显的变化是颜色从淡绿到深褐色,卵在发育96h后卵基本全部孵化。

There was a conflict between plebs and patricians in ancient Rome in 494BC.

在公元前494年,罗马发生了一次平民反对贵族的斗争。