系统发生
- 与 系统发生 相关的网络例句 [注:此内容来源于网络,仅供参考]
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In this paper, the biological characteristics of florescence, spikelet and inflorescences structure, morphogenesis formation of inflorescence, megasporogenesis and the development of female gametophytes were studied systematically by using anatomy structure, scanning electron microscopic and paraffin section methods. The results were as followed:(1) Phyllostachys praecox was the bamboo flowering fragmentarily; the cultivation changed the characteristic of flowering; the plantlets of flowering were complex and splitted into three kinds: the plantlet flowering before continued flowering; the plantlet flowering before stopped flowering and the plantlet changed into flowering. The inflorescence of Ph. praecox was indefinite inflorescence or called false inflorescence, and actually it was flower stress structure. Its basal unit was pseudospikelet with two kinds: apical spikelet and lateral spikelet. The floret had one lemma, one pelea, three stamens, one pistil and three lodicules.
本研究综合运用形态解剖学、扫描电镜、石蜡切片等技术手段,对雷竹花期生物学特性、小穗与花序构造、花序形态建成过程、大孢子发生与雌配子体发育等进行了较为系统的研究,结果表明:(1)雷竹为零星开花竹种,耕作条件对其开花特性具有重要影响;开花植株类型复杂多样,可以分为以前开过花现在继续开花、以前开过花现在停止开花以及以前未开过花现在转为开花等3种类型;雷竹花序为无限制花序或称&假花序&,实为花枝结构,基本单位为&假小穗&;假小穗有顶生和侧生之分;小花具内外稃各1枚,雄蕊3,雌蕊L,另具3枚大小不等之鳞被。
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Your Legacy Systems have been "Leap Frogged" by a Nimble Entrepreneurial Firm - This happens all the time and can cause an erosion of your customer base.
你的遗留系统已被&甩开&,由一个灵巧的创业公司,这一切发生的时间,并且可造成侵蚀,你的客户群。
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The primary performance properties of these compounds when applied as gas generant composition are also studied.
为了研究和开发新型富氮化合物,本论文系统地研究了富氮化合物的制备、晶体结构、热分解过程和爆炸性能,并对其在气体发生剂中应用的基础性能进行了研究,研究工作及取得的主要成果如下。
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In the past few years, with the deepening development of new curricular reform, great changes have taken place in Chinese teaching of senior high school: dynamic liveliness, self-exploration, and association with life have been widely applied by teachers into practice, because the traditional closed circulation is of no benefit to students' individual development. Classroom teaching on the basis of presupposition and generativeness is no longer what used to be, but a creative platform that helps students with self-understanding, self-interpretation. In brief, it promotes students' individual feelings and unique views, and emphasizes more their growth.
近些年来,随着新课改的不断深化,中学语文课堂发生了很大的变化,动态生动,自主探究,联系生活已被中小学教师广泛地运用到语文课堂教学中,传统封闭课堂运行体系无益于学生个性的发展,课堂教学通过预设与生成不再是一个封闭的系统,而是一个开发的平台,让学生在预设下自我理解,自我解读,尊重学生个人感受和独特见解,课堂教学更加关注人的整个生命的成长。
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Scientific classification of soils is the basis of utilization and exploitation of soil resources. However, Soil Taxology, characterized by quantification, standardization and internationalization, is not popularized by far. So it is necessary to study its relationship with soil genesic classification and its application for agriculture and environment.
土壤的科学分类是土壤资源开发和利用的基础,土壤的系统分类以定量化、标准化和国际化为特点,但其大众化水平有待进一步提高,尚需加强与土壤发生分类的参比研究,并深化其在农业生产应用、土壤环境评价等方面的实践意义。
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Based on soil desertification between agriculture and husbandry interlace zone in north of Shannxi Province, on the basis of theories of landscape ecology、land resource and principle of soil genesic science, through field surveying data and indoor analyzing, the properties of soil physical, chemical and biological characteristics are systemic analyzed about desertification soil of different vegetation cover rate and type, achieving primary achievements and important evolves are as follows:Ⅰ.
本研究基于当前全球荒漠化危害现状及国内外荒漠化防治中恢复生态学的发展需要,以陕北农牧交错带土地荒漠化问题为研究对象,应用景观生态学理论、土地资源学和土壤发生学的基本原理,在野外考察、资料收集和室内测定分析的基础上,对不同植被盖度和植被类型荒漠化土地的土壤理化性质和生物学性质进行系统分析,取得的主要成果如下: 1。
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Aiming at the spatial complexity and genesic repeatability of soil salinization in Lower Yellow River Delta, with the application of electromagnetic induction EM38 and its mobile sensing system, spatio-temporal variation of soil salinity in typical field of this region during two critical seasons was analyzed by using GIS and geostatistics method.
针对黄河下游三角洲土壤盐渍化的空间复杂性与发生反复性,运用磁感式大地电导率仪EM38及其移动测定系统,结合GIS与地统计学方法,对该地区典型地块两个关键季节土壤盐分的时空变异特征进行了分析。
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The Da'anshan coal mine already entered the deep mining stage, Geologic structure is complex by the fold geologic structure primarily in the Minefield, the mining coal working surface and the tunnel impact geostatic pressure occurs frequently, but so far has not conducted the system research.
大安山煤矿现已进入深部开采阶段,井田内以褶曲为主的地质构造复杂,采煤工作面和巷道冲击地压发生频繁,但到目前为止还没有进行过系统研究。
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Gliosis plays a critical role in post-traumatic epileptogenesis. The inhibition of the proliferation of astrocytes with 7β OHCH could influence synaptic plasticity, modulate the imbalance of excitatory and inhibitory systems in hippocampus and postpone the latency between injury and the occurrence of chronic spontaneous seizures, furthermore to some extent, reduce the occurrence of post-traumatic epilepsy.
星形胶质细胞增生在创伤性癫痫发病机制中起重要作用,抑制胶质细胞增生,可影响海马突触可塑性,有利于调整海马内兴奋性和抑制性功能系统之间作用的失衡,可延长损伤与发生慢性自发性抽搐之间的间歇期,在一定程度上降低创伤性癫痫的发病率。
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Doug de Groot, who works on computer-generated beings called avatars and other types of digital "life" at Leiden University in the Netherlands, says Bell's system could eventually form the basis for "meet the ancestor" style educational tools, where people will quiz their ancestors on what happened in their lifetimes.
Doug de Groot,在荷兰来顿大学从事计算机产生人的研究,该项研究被称作&人的化身和其他数字化'生活'&,他说 Bell 的系统可以最后为&与祖先会面&教育性工具建立基础,人们可以用它考查他们祖先的一生曾经发生过什么。
- 推荐网络例句
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We have no common name for a mime of Sophron or Xenarchus and a Socratic Conversation; and we should still be without one even if the imitation in the two instances were in trimeters or elegiacs or some other kind of verse--though it is the way with people to tack on 'poet' to the name of a metre, and talk of elegiac-poets and epic-poets, thinking that they call them poets not by reason of the imitative nature of their work, but indiscriminately by reason of the metre they write in.
索夫农 、森那库斯和苏格拉底式的对话采用的模仿没有一个公共的名称;三音步诗、挽歌体或其他类型的诗的模仿也没有——人们把&诗人&这一名词和格律名称结合到一起,称之为挽歌体诗人或者史诗诗人,他们被称为诗人,似乎只是因为遵守格律写作,而非他们作品的模仿本质。
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The relationship between communicative competence and grammar teaching should be that of the ends and the means.
交际能力和语法的关系应该是目标与途径的关系。
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This is not paper type of business,it's people business,with such huge money involved.
这不是纸上谈兵式的交易,这是人与人的业务,而且涉及金额巨大。