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eight-grade
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  八年级
     The evaluation report of eight-grade mathematics examination in experimental district for new century version textbooks
     实验区新世纪版教材八年级数学试卷评价报告(下)
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  相似匹配句对
     Eight warm
     8·温暖
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     Eight species, D.
     boryanum ,陕甘介蕨D .
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     Study on eight extra-meridians
     奇经八脉探讨
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     Results Twenty-eight strains Y.
     结果 检出Y .
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     grade.
     级;
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  eight-grade
The CDI was group-administered to all 1,252 subjects; 155 fifth-grade subjects (77 males and 78 females) were retested after 3 weeks, and 107 seventh- and eight-grade subjects (45 males and 62 females) were retested after 1 year.
      
The data derive from in-school surveys of eight-grade students conducted in 1998 and 1999 in Arizona, California, Nevada, and Wyoming.
      
The data derive from in-school surveys of eight-grade students conducted in 1998 and 1999 in Arizona, California, Nevada, and Wyoming.
      
This article presents an analysis of about 100 interviews with students from eight-grade classrooms in Berlin, Hong Kong and San Diego that reconstructs student motivations and the meanings they attribute to classroom activities.
      


The curing characteristics of emulsion SBR and BR made in China as well as eight grades of solulion SBSs and vinyl polybutadiene rubbers made in Japan for tyre tread applications and their blends with NR were studied by using oscillating disk rheometer. The results showed that the higher the vinyl content in rubber was, the slower the cure rate and the better the cure reversion resistance were. Furthermore, the styrene content and cis-, trans-structures had only a slight effect on these properties. Blending...

The curing characteristics of emulsion SBR and BR made in China as well as eight grades of solulion SBSs and vinyl polybutadiene rubbers made in Japan for tyre tread applications and their blends with NR were studied by using oscillating disk rheometer. The results showed that the higher the vinyl content in rubber was, the slower the cure rate and the better the cure reversion resistance were. Furthermore, the styrene content and cis-, trans-structures had only a slight effect on these properties. Blending BR 1245 and solution SBR SL 557 ( both being of good reversion resistance ) with NR, the reversion resistance of the blends could be improved much more than what was predicted from their blending ratios. The reversion parameter R could be used for the quantitative evaluation of the cure reversion of rubber compounds. R= ( Mmax- Mt ) /Mmax. The smaller the R value, the better the reversion resistance of a rubber compound. The 300% modulus of BR 1245 vulcanizates increased remarkably with the increase of cure temperature and cure time.

采用LH-Ⅱ硫化仪,研究了具有不同微观结构的轮胎胎面用国产乳聚SBR、BR、日本生产的八种牌号的溶聚SBR和乙烯基PBd及其与NR并用胶的硫化特性。结果表明,乙烯基含量越高,胶料的t_(90)越长,硫化返原性越好,而苯乙烯含量和顺、反式结构的影响较小。对于具有良好抗返原性的BR 1245和溶聚SBR SL 557,当它们与NR并用后,其并用胶抗返原性的改善程度较预计的大。返原性参数R值越小,胶料的抗返原性越好,R=(M_(max)-M_t)/M_(max)。BR1245的300%定伸应力随着硫化温度的提高和硫化时间的延长而明显增加。

The Yellow River Delta is one of the three biggest deltas in China. Its area is about 5930 km2 and it has rich land resources.In the first place, this paper divides the land into five kinds and nineteen sub-kinds. Then it divides the land quality into eight grades and thirteen classes by applying the method of two-stage fuzzy synthetical judgement. It has been found that the land mainly suitable for agriculture makes up 28.83%, that mainly suitable for animal husbandry makes up 34.44%. and that mainly suitable...

The Yellow River Delta is one of the three biggest deltas in China. Its area is about 5930 km2 and it has rich land resources.In the first place, this paper divides the land into five kinds and nineteen sub-kinds. Then it divides the land quality into eight grades and thirteen classes by applying the method of two-stage fuzzy synthetical judgement. It has been found that the land mainly suitable for agriculture makes up 28.83%, that mainly suitable for animal husbandry makes up 34.44%. and that mainly suitable to fishery makes up 27.98%.At last, the method of the Analytic Hierarchy Process (AHP) is used to analyse and inquire into the countermeasure of rational exploitation and utilization of the land resources. The authors lay the emphasis on abiding by the general principle that the economic benefit is subordinate to the social and ecological benefits. Under this premise, this paper puts for-word six exploitive tactics headed by pledging the land to be used in industry and mine, and twenty exploitive measures headed by diverting the Yellow River water and using its sediment to improve the saline-alkali land.

黄河三角洲是我国三大三角洲之一,面积约5930km~2,它拥有丰富的土地资源,但从大农业角度来看,其土地质量较差,生态环境脆弱。当前,其土地资源的合理开发利用具有十分重要的现实意义。 首先,本文将区内土地类型划为 5类和19个亚类。其次,应用二级模糊综合评判,将其土地质量分为8等13级。其中宜农地占28.83%,宜牧地占34.44%,渔业用地占27.98%。最后,应用层次分析法(AHP)对土地资源合理开发利用的对策作了分析探讨。认为:对于黄河三角洲土地资源的开发,必须强调遵循经济效益服从社会效益和生态效益的总原则。在此前提下,提出了以保证工矿业用地为首的6项开发策略,以及以引黄放淤改良盐碱地为首的20项开发措施。

This prper analyses the meaning of the regulation of changeable use of material and the form of the regulation of eight-grade use of material provided by Yingzao Fashi (a Chinese ancient budget control norm of buildings), and infers the process of the fromation and development of the regulation. In addition, the importance of it to the research of the structural carpentry system is also indicated.

本文分析了《营造法式》变速用材制度的涵义以及八等级用材制度的构成形式,推定了变造用材制度的形成和发展的过程,并指出了它在《营造法式》大木作制度研究中的意义。

 
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