查询词典 varied

The effect of zeolites ion-exchanged by transition metals on thermal catalytic cracking reaction is studied. The product distributions of the cracking reactions catalyzed by theβor ZSM-5 zeolites exchanged with transition metals are different from that catalyzed by corresponding Hzeolites, which means the mechanism of cracking reactions has varied. Group Ⅷ metals Fe, Co, Ni and Cu, Zn are shown to be of strong catalytic activity of oxidative dehydrogenation, while Ti and Cr are not of oxidative activity. Catalyzed by zeolites or catalyst containing Ag, conversion of thermal catalytic cracking reactions and the yield of ethylene increase while the yield of propylene does not decrease. Silver can not only promote the formation of carbonium ion, but also convert carbonium ion into free-radical via redox reaction. The weak adsorption of olefins on silver reduces the occurrence of hydrogen transfer and dehydrogenation. As a result, the yield of light olefins is favored by silver in the catalyst.

采用过渡金属交换的分子筛作为催化剂，进行催化热裂解制取乙烯的反应，研究发现，在β沸石分子筛和ZSM-5分子筛中引入过渡金属后，催化热裂解反应的产物分布与相应的氢型分子筛相比有了较大的变化，说明过渡金属的加入对于催化热裂解反应的机理具有影响，Ⅷ族金属如Fe、Co、Ni和第Ⅰ、Ⅱ副族Cu、Zn表现出较强的氧化脱氢活性，产物中氢气、焦炭的产率很高，Ti、Cr则未表现出氧化作用：分子筛及催化剂中引入银后，催化热裂解反应的转化率和乙烯的产率有了提高，丙烯产率没有很大的变化，说明银在催化热裂解反应中能够促进正碳离子的生成，又有可能通过氧化-还原作用部分改变反应机理，促进了自由基的生成，并且由于银对烯烃的吸附很弱，其氢转移反应和脱氢、加氢活性比较低，有利于烯烃产率的提高。

Quercus liaotungensis, Carpinus cordata, Quercus aliena, Acer truncatum, Quercus variabilis and so on are the dominant tree species appeared in varied forests.

主要乔木种有辽东栎、千金榆、槲栎、鹅耳枥、华山松、元宝槭、栓皮栎等，极偶然情景下可遇到连香树、山白树和南方红豆杉等珍稀濒危植物。

Contents in this chapter includes a brief introduction of the history of premium price cartelization, the evolution of state regulation on this kind of naked price-fixing conducts, a summary of varied economic analysis of such cartelization, and a description of how the ISO gave up the practice of publishing advisory rates. This chapter also speculates that, in the end, the state rate regulation may well return to the track of normal antitrust regulation considering the abandonment of advisory rate.

在第三章里，论文分析了美国保险业获得豁免的协会定价行为，介绍美国保险业早期通过行业协会来组成价格卡特尔的情形，同时介绍了各州对这类协会定价行为的监管变迁；对行业协会定价行为进行了竞争效果分析，从经济学的角度对这类最明显、最突出的垄断行为进行定性分析；接下来介绍保险行业协会如何在公众压力之下被迫放弃协会定价行为，分析了保险费率监管是怎样向着反托拉斯法规制回归的。

Acid phosphatase activity in the rhizosphere of Castanopsis sclerophylla varied sharply with the size of an island, but was not significantly related to AM infection rate.

苦槠根际土壤酸性磷酸酶活性在中岛、大岛与陆地间差异显著，但与AM侵染率之间无显著相关性。

Results The long term results of the vascularized fibular graft varied in different types of bone defects. Nine patients with congenital pseudoarthrosis of tibia had the limb function restored in 65％ and one had nonunion of fibular graft, 3 fractures(7 times), and 5 angular deformities. Three patients with congenital radial deficiency had 62％ restoration of the limb function. All of them showed early closure of epiphyses of the grafted fibulae. Five cases with osteomyelitis and bone defects combined soft tissue deficiency had 94％ restoration of the limb function, and only one occurred fracture of fibular graft. One case with soft tissue defect and concomitant ulnar defect, ulnar nerve and median nerve injury, 67％ function of limb was recovered, and union of fibula graft was good. 100％ function of limb was recovered in 1 case with cavernoma of radius and without occurring valgus deformity of donor site.

结果应用带血管腓骨移植修复骨缺损的远期效果因缺损类型的不同而存在较大差异。9例先天性胫骨假关节患者，术后肢体功能恢复65％，其中移植腓骨骨不连1例、骨折3例(7次)、成角畸形5例；3例先天性桡骨缺如患者，术后肢体功能恢复62％，3例术后均出现移植腓骨骨骺线早闭，畸形复发；5例骨髓炎、骨外露、骨缺损并软组织缺损患者，术后肢体功能恢复94％，仅1例发生移植腓骨骨折；1例前臂软组织缺损并尺骨缺损，尺神经、正中神经损伤者，术后肢体功能恢复67％，骨愈合顺利；1例桡骨海绵状血管瘤者，术后肢体功能恢复100％，骨愈合顺利。

Their data should be interpreted with some caution because quality of fixation of the different cementless cups varied greatly

但必须意识到不同非骨水泥髋臼杯的固定质量变化很大，这对结果会有一定的影响。

Christian monasticism has varied greatly in its external forms, but, broadly speaking, it has two main species the eremitical or solitary, the cenobitical or family types.

基督教修道有很大的差别在其外部形式，但大致来说，它有两个主要物种 eremitical或单独，在cenobitical或家庭类型。

Christian monasticism has varied greatly in its external forms, but, broadly speaking, it has two main species the eremitical or solitary, the cenobitical or family types.

基督教修道有很大的差别，在其外部形式，但大致来说，它有两个主要树种 eremitical或孤立， cenobitical或家庭类型。

Results show that Pb enrichment factors varied from 1.0～1.8 in the cultural layers, and were not quite high. However, with the history going on from the Dawenkou Culture to the Longshan Culture, the Pb enrichment factor displayed an obvious rising trend, which indicated that the Pb in the cultural layers was probably associated with the development of metallurgic activities in the middle stage of the primitive society. From 5 050 cal a BP to 4 000 cal a BP, China underwent Stone Age, Chalcolithic Age and Bronze Age in sequence. Pb dust in the atmosphere increased with intensifying utilization of copper resources, which was probably the main cause of the rising enrichment factor in the cultural layers.

但是随着时间的推移，从大汶口文化到龙山文化，Pb的富集系数有明显逐步上升的趋势，表明遗址剖面中的Pb很可能与原始社会中期发展起来的冶金活动有关。5 050～4 000 cal a BP间，中国先后经历了石器时代、铜石并用时代，到最后进入青铜时代，这个过程中铜资源利用越来越多导致产生的大气粉尘铅越来越多，很可能是YC1剖面中Pb富集系数逐步增长的主要原因。

It was shown that the algal species composition and cell densities in the reservoir varied markedly among the three periods. At present, the algal community in mainstream was dominated by Bacillariophyta, and then Chlorophyceae.

数据显示，蓄水前（2003年1月~2003年6月）、蓄水1周年（2003年6月~2004年5月）和蓄水1.5年（2004年6月~2004年12月）3个时间段之间，被调查水域的浮游藻类群落结构、细胞密度和水质状况均存在一定的差异。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐