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Because of specificity and high efficiency, the catalytic efficiency of cellulase is high(more 103~1013 times than general catalysts), the condition of catalytic reaction is mild and the catalytic activation can be adjusted and controlled, which can improve remarkably semblance and handle of fabrics during finishing fabrics by biological catalyzing, moreover cellulase can replace some chemical materials such as acid, cocain, chlorine and phosphorus etc, so as to decrease pollution, make no waste-water and protect environment.

由于酶具有专一性和高效性,采用生物催化,其催化效率高比一般催化剂高10~3~10~(13倍,催化反应条件温和,催化活性可调节控制,应用在纺织品处理上,能显著改善织物的外观和手感,并能取代一部分酸、碱、氯、磷化合物等化工原料,从而减少污染,不产生污水,有利于环保和生态。而且酶本身又无毒,容易生物降解,不会引起环境污染,所以酶处理已被公认为是一种符合环保要求的绿色印染加工方法。本文选用了市场上常用的纤维素酶R-10和纤维素酶ECS2610两种生物酶。

In this investigation, the number of maternal ramets and daughter ramets, length of stolon and spacer, distributed pattern of spacer and the relationship with community quantitative character were compared and researched between the two Potentilla. This offers basic data for more discussions to ecological and phenotypic adaptive strategy of the two population.

本文就两种委陵菜种群的母株、分株数量、匍匐茎长度以及间隔子长度及其布局及其与群落数量特征的关系进行比较研究,为进一步深入探讨这两种委陵菜种群的表型适应与生态适应策略提供基础性研究数据。

In this paper, the decolorization of acid mordant dyes on fresh MnO 2 and the main effect factors were investigated.

本文主要报道了一种用于染料废水处理的新型材料即新生态MnO2 及其对三种酸性媒介染料染色废水的脱色作用及影响脱色效果的主要因素。

Vegetation types in mountainous area of West Lake4 groups of vegetation type, 7 vegetation types, 14 formation groups and 25 formations were present in mountainous area of West Lake, according to taxonomic approach and divisory principle in Vegetation of China and Forest of Zhejiang.

西湖山区森林植被类型根据《中国植被》和《浙江森林》的划分原则和分类系统,采用高级分类单位以生态外貌为主、中低级单位采用优势种和标志种相结合的原则,把西湖山区的各类森林划分为4个植被型组、7个植被型、14个群系组和25个群系。

Structure index was significantly (P.05) different among three plant species whereas channel index and enrichment index were not. Plant species not only modified abundance of plant-feeding, omnivorous and predatory nematodes, but also percentage of each trophic group. Bacterivorous and fungivorous nematodes were affected most by the differences in plant species.

研究表明在沙地生态系统中,3种植物根际土壤线虫群落的多样性、丰富度、均匀度和线虫总数虽然都存在一定的差异,但不显著;功能多样性指数中结构指数存在显著差异,而通道指数、富集指数不存在显著差异;3种植物对根际土壤线虫群落中各营养类群线虫的比例有显著影响。

Among the special nine pollutants, however, eight of them, including Hexachlorobenzene, N-Nitrosodi-N-propylamine, 3,3-dichlorobenzidine, 2,4,6-trichlorophenol, 2,3,4,5,6-pentachlorophenol, indeno (1,2,3-cd) pyrene, 4,4'-DDT and Heptachlor were in need of concern while another chemical: dibenzanthracene be of special concern. The sources of these chemicals were discussed and some control strategies were suggested based on the risk assessment.

结果表明,有18种有机污染物超过了USEPA的标准浓度要求,其中9种物质具有一定的生态风险,其中六氯苯、N-亚硝基二正丙胺、3,3'-二氯联苯胺、2,4,6-三氯酚、五氯酚、茚并(1,2,3-cd)芘、4,4'-滴滴涕、七氯在内的8种化合物具有一定的风险,而多环芳烃二苯并蒽需要引起更高警惕;在此基础上探讨了这些化合物的来源及作用,并提出了相应的防治建议。

According to existing results, it is generally thought that during the Neoproterozoic Earth had experienced several most severe global glaciations in Earth's history.

根据现有的研究结果,地球在新元古代时期确实经历了数次地球历史上最为严重的全球性冰川期,但地球是否被完全冰封还需要更充分的古地质和古生物方面的证据来证明;利用气候模式对各种可能的外部强迫的模拟试验表明&冰雪地球&是很难形成的,并且,如果地球进入完全被冰封的状态,它将是难以被融化的;关于新元古代时期剧烈的气候变化对寒武纪生命大爆发所起的作用存在2种观点,一种认为气候变化导致了原始生命的基因突变并诱发了寒武纪生命爆发,另一种认为这种影响主要是生态方面的。

This is an unfortunate ecological coincidence, as one of the original compounds for sunscreen was synthesised from an Australian coral reef.

这是个不幸的生态巧合,防晒霜自身中的一种化合物正是用一种澳大利亚珊瑚礁中人工合成的。

It is concluded in Chapter Eight that: 1 linguistic proficiencies in three languages play a considerable part in code-switching of EFL teachers in trilingual context; the inter-sentential switching outweighs the intra-sentential switching both in frequencies and percentage; discourse-related switching also outweighs participant-related switching in frequencies and percentage; the EFL is maintained longest in EFL classroom and the language maintained second longest depends upon learners" higher proficiency in Chinese or Tibetan. 2 Ethnic identity and educational background is the major causal factor of EFL teachers" Chinese-English switching in trilingual classroom; duration of language contact and relative trilingual proficiencies are the two principal contributors to the English-Tibetan switching; while Tibetan-English switching is mainly driven by EFL teachers" ethnic identity and education background, as well as the duration of language contact; English-Chinese switching is also largely motivated by the duration of trilingual contact; and Chinese-Tibetan switching is determined by trilingual proficiency to a considerable extent. Meanwhile, psychologically, the switching is mainly motivated by a procedure of psychological projection, trilingual system conceptualization and the mentality of trilingual selection. 3 The educational reflections upon this study indicate: firstly, in trilingual context, the teachers" classroom discourse is characterized by the multilingual involvement, flexibility in strategy option as well as the extension and strengthening of the domination of teachers" discourse. Secondly, the discourse movement and code-switching are largely affected by two cultural ecological mechanisms: enculturation and cultural manipulation. Thirdly, the status quo of EFL trilingual teachers are characterized by unbalanced trilingual proficiencies, poor cultural awareness, and little knowledge of trilingual education and trilingual code-switching, therefore, suggestions are advanced in the end to provide them further education. Fourthly, in trilingual context, the EFL curriculum for ethnic minorities is characterized by plurality of aims, complexity of organization and variety of resources. Meanwhile, it is of great necessity to understand the linguistic values of EFL education for ethnic minority learners. To be specific, firstly, we should not only have a deep understanding of the distribution, construction, function as well as communicative effects of the three languages, but also have a comparative study of the three languages and thus provide the standardization and guidance for the trilingual education. In the end, it is advanced that trilingual EFL provision for ethnic minority should pursue to develop learners" multicultural value system in which first language culture and mother language culture take the central position and EFL culture plays a vital role.

3在三语环境下,教师课堂话语具有话语形态多元化、话语选择策略具有灵活性和教师话语权得到延伸和拓展等特征;文化涵化和文化操控是影响三语教师课堂语码转换的两种文化生态机制;参差不齐的三语水平、淡薄的多元文化意识和对三语教学和语码转换缺乏科学认识是我国目前三语师资的主要特点,因此应对三语教师进行职后继续教育;在三语环境下,民族外语课程具有课程目标多元化、课程组织复杂化和课程资源多样化等特点;应对民族外语教育的语言价值进行审视和解读,对三种语言在课堂话语中的分布趋势、结构特征、功能作用和交际效果等问题进行深入研究,加强对三种语言间的对比分析研究,同时对民族外语教育中的三语教学进行规范和指导;在强调民族文化和二语文化在三语文化格局中心地位和外语文化的重要作用的同时,民族地区的外语教育应以构建多元文化价值观为其文化追求。

"Bio2 is a synthetic ecosystem, but so is California by now," said Burgess.

&Bio2是一种人工合成的生态系统,不过,现在的加利福尼亚也是一种。&

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推荐网络例句

She gently rebuff ed him, but agreed that they could be friends

她婉言拒绝了,但同意作为朋友相处。

If in the penal farm, you were sure to be criticized.

要是在劳改农场,你等着挨绳子吧!

Several theories about reigniting and extinguishing of the arc have been refered.

本文综合考虑了几种电弧重燃和熄灭理论。