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Glucose an aldohexose, exists as D and L forms. The furthest asymmetric carbon from the aldehyde group is C-5. D-glucose is called D because the configuration of the atoms bonded to C-5 is the same as for D-gly- ceraldehyde. Similarly D-fructose﹙a ketohexose﹚ is designated D because the configuration

环状结构：醛基或酮基跟一个羟基反应共价闭合，形式上一个糖的醛基和羟基反应生成了一个半缩醛，而一个酮基与一个羟基反应生成一个半缩酮，在同一分子内这个反应能进行，单糖的开链式形成了糖环，葡萄糖环形成一个六碳环。

Although the range of all metals studied in water samples did not exceed the National Water Quality Standard for Fisheries (GB 11607－89), relatively obvious contamination of Pb, and in particular Zn and As were found by the range in the samples of sediments and Anodonta woodiana.

虽然水样中各重金属均未超过国家渔业水质标准（GB1160789），但底泥和背角无齿蚌的结果显示出Pb，特别是Zn、As的污染比较明显。

The representative families are Dryopteridaceae, Athyriaceae, Polypodiaceae, Thelypteridaceae, Selaginellaceae and Aspleniaceae. The main genera are Dryopteris, Selaginella, Asplenium, Arachniodes, Pteris, Allantodia and Plagiogyria. The top families' distribution types are cosmopolitan and pantropic ones, the main genera are pantropical ones, while species distribution type belong to the east Asia type and represents the feature of subtropics transition to warm temperated areatype. As for the order of closeness, the sequence of pteridophytes floristic relations between Songyang and the adjacent regions goes as Southwest China, South China, Central China, Japan, North China, Northwest China and Northeast China. The six upland pteridophytes next to Songyang can be put into the same natural flora because of its closest relationship. But compared with other 11 upland fern flora in China, fern in Songyang is not rich enough. There are 37 species endemic to China in Songyang.

结果表明，松阳蕨类植物共有38科72属161种7变种；优势科为鳞毛蕨科、蹄盖蕨科、水龙骨科、金星蕨科、卷柏科、铁角蕨科，优势属为鳞毛蕨属、卷柏属、铁角蕨属、复叶耳蕨属、凤尾蕨属、短肠蕨属、瘤足蕨属；科的分布以世界分布和泛热带分布为主，属的分布以泛热带分布为最多，种以东亚分布类型为主，特别是中国—日本分布类型最多，表现出亚热带向暖温带过渡的特点；本区与邻近地区蕨类植物区系关系的密切程度由大到小依次为西南、华南、华中、日本、华北、西北、东北；与邻近的6个山地蕨类植物区系的亲缘关系密切，可以划为同一自然区；与国内11山地蕨类植物区系相比，松阳的蕨类植物丰富程度不高；松阳拥有37种中国特有蕨类植物及一些珍稀蕨类植物，有较高的保护价值。

Value and damage of nature is not asse ssed as easily as for normal goods.

未能考虑外部效应的另一个问题是自然界的价值和损失并不象通常货物一

As for the word AVIJJA, it translates as ignorance, but ignorance here, doesn't mean not knowing how to eat or bathe, it's not that kind of not knowing, that is another matter, not this matter.

至於Avijja，中文翻译为无明或不知道，但这里讲的无明或不知道并不是说不知道如何吃东西或洗澡，不是那种不知道，那种指的是另一回事而不是此处讲的这一回事。

As for beamless slabs with the same amount of prestressed reinforcement and non-prestressed reinforcement but different reinforcing ways, the bearing capacities are considered to be the same according to former experiment results. Based on this point, the arrangement of tendons is considered to be arbitrary by equivalent frame method as long an the amount of tendon is unchangeable.

对于仅预应力筋布置方式不同，而配有相同数量的预应力筋及非预应力钢筋的无梁板，以往的试验结果和理论分析揭示了它们具有相同的极限承载能力，很多人依据这一结论，认为只要保证了无粘结预应力筋的总量，其布置方案可以是任意的，因此采用等代框架法计算、设计预应力筋。

Structure analysis indicates that it crystallizes in triclinic, space group P1, a =9.554(3)A, b =10.4874(18) A, c =14.027(2) A,α=91.873(15)°,β=91.879(19)°,γ=92.86(2)°. The polymeric anion of [(CH3)4N]As3S5 consists of adjacent 1∞[AS3S5]- chains linked together into a 1∞ [As6S10]2- double chains through planar As2S2 rings . A relatively undistorted Ψ-AsS4 trigonal bipyramidal geometry is observed for the participating As atoms.

b=10.4874(18)，c=14.027(2)，α=91.873(15)°，β=91.879(19)°，γ=92.86(2)°。化合物[(CH_3)_4N]As_3S_5结构中聚合阴离子由邻近的~1_∞[As_3S_5]~-通过平面环As_2S_2连接形成~1_∞[As_6S_(10)]~(2-)链，这种链通过每第二个结构单元环状As_3S_3结构单元的As原子连接组成双链结构，其结构中可观察到赝三角锥配位的ψ-AsS_4。

Cultivating the rural human resources is not only the essential contents bult also the urgent demands and the most important prompting force in building new socialist countryside.But as for Sichuan Provinces cultivating the rural human resources,there are such problems as great in quality,poor in quatity,unreasonable in structure.

因为农村人力资源开发既是建设社会主义新农村的重要内容，也是建设社会主义新农村的迫切要求和根本推进力量，然而，目前四川省农村人力资源还存在着诸如数量庞大、质量较低下、结构不合理等一系列问题。

The results demonstrate that the distributi on of Hg does not appear to be associated with any other elements, while S may b e capturer for Hg; As, Cr and Ni are elements controlled by pedogenesis; Cd and Pb are elements disturbed by anthropic contributions; Cu is mainly controlled by pedogensis and Zn is closely association with Mn oxides in soils.

元素的相关性分析和聚类分析结果表明 Hg相对于其他元素表现较独立， S对 Hg有一定的捕获能力；As、 Cr和 Ni是受控于成土母质的元素组合；Cd和 Pb是受人为污染影响较强的元素， Cu来源于地质成因的比例较大；Zn受控于土壤中锰氧化物粘粒。

The adsorption characteristics of arsenic in water by cerous hydroxide were studied.The results showed that cerous hydroxide had well adsorption effect for trivalent arsenic and pentavalent arsenic.

研究了氢氧化铈对水中砷的吸附特性，结果表明：氢氧化铈对As和As均有良好的吸附效果，其吸附等温线能很好地用Langmuir方程描述。

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。

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。