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Absctrct: Objective This study was designed to investigate the stress distribution in the surface of tooth and peridental tissues and the initial displacements of tooth in the maxillary under two orthodental simulating force rectangular archwire with T loop and II class elastic used clinically by the 3-D finite element method so as to clarify the biomechanism of orthodontic tooth movement and component of optimal orthodontic force system.

目的：通过有限元分析法比较两种工况下上颌各牙齿的位移趋势和牙根及牙周支持组织内的应力分布规律，为临床治疗中合理选用矫治力系统以便有效的控制牙齿移动类型提供可靠的理论依据。

By using red blood cell broken-up solution,proteinase K and RNase,total DNA with high quality was extracted from the egg membranes in the incubated eggshells of two pheasant species,Reeves's Pheasant Syrmaticus reevesii and Ring-necked Pheasant Phasianus colchicus from Dongzhai Nature Reserve in Henan Province.

本实验以河南董寨自然保护区白冠长尾雉和环颈雉已孵化的卵壳为材料，利用红细胞破碎液、蛋白酶K及RNA酶等试剂，对卵壳膜内的总DNA进行了提取，建立了一种提取高质量DNA的新方法。

Accumulation of the coat protein and MP of the three viruses in planta was compared, and all the three viruses accumulated with similar levels in testing period.

系统分析比较了TMV、ToMV和T/OMP外壳蛋白和MP在植物体内的积累水平，发现3种病毒的CP和MP在测定的时间内没有明显的差异。

The observation of morphogenesis of flower buds in this stage shows that this early floral buds have only perianth primordia at most, and no sex organ primordia yet.

综上所说，黄瓜的性别表达过程应该是多激素共同作用的结果，并且每一种内源植物生长物质对黄瓜性别表达的作用应该有一定的阈值。

As an important plant osmotic regulators, glycine betaine in plants, under the osmotic stress, can be accumulated in order to give the plants high salt-tolerance by reducing osmotic pressure and maintaining proteinic structure in cell.

甘氨酸甜菜碱是一种重要的调渗物质，在盐胁迫下有些植物能通过体内甘氨酸甜菜碱的积累保护细胞内蛋白质的结构和功能，降低细胞水势，从而来增加自身的耐盐能力。

Concrete pump is a construction device which pumps concrete depending on the pressure in the pipe. It is able to complete horizontal and vertical transportation continuously at the same time and it has charateristics of high effiency, labor saving, low cost, long transportation distance, and high pumpage. Concrete pump is an perfect device for modern transportation, especially for the confined sites and construction fields filled with roadblock where other transportation tools cant get close to directorly.

混凝土泵是通过管道依靠压力输送混凝土的施工设备，它能一次连续地完成水平运输和垂直运输，输送效率高、劳动力省、费用低，混凝土泵运输距离长，单位时间内的输送量大，尤其对于一些工地狭窄和障碍物的施工现场，用其他运输工具难以直接靠近施工工程，混凝土泵则能有效地发挥作用，是较为理想的一种现代混凝土输送设备。

The results show that biomass owns higher NO removal efficiency than pulverized coal. NO removal efficiency of three kinds of fuels increases by different extent through the increase of reburn fuel fraction and the decrease of the excess air ratio. NO removal efficiency of corn straw is the most efficient; rice husk is medium, pulverized bituminous coal is the lowest. Within the certain reburn resident time (650 ms), NO removal efficiency increases quickly with the resident time.

研究表明：生物质脱硝能力明显高于煤粉，提高再然比例及减小过量空气系数，3种燃料的脱硝率有不同程度的提高，其中秸秆脱硝率最高，稻壳中等，煤粉最低；在一定的再燃停留时间内(650 ms)，延长停留时间，脱硝率增加，超过这一停留时间，脱硝率增加缓慢。

Suppose, on the other hand, that the global financial implosion continues into 2009 and bank nationalisations around the world turn the allocation of capital into a governmental responsibility, in a bizarre resur rection of Soviet-style central planning.

另一方面，设想全球金融内爆继续到2009年，全球银行国有化使得资本的分配由政府掌控，这是一种古怪的苏联风格中央计划形式的复苏。

E Redescribe one of your profession's existing functions in an abstract way, and then identify several other activities to which the same abstraction could be applied -- including activities that are currently performed by other professions.

用一种抽象的方法重新描述一个专业内已经存在的原理，然后找出这种抽象可以运用的大量其他活动，——包括那些在其他专业已经运转的活动。

A new method based on the "virtual leg" is presented which can realize the running of humanoid running robot in sagittal plane.

基于&虚拟腿&的概念，提出了一种新的方法实现仿人型跑步机器人在矢状面内的跑步运动。

By the time of its fall, most of the prisoners were writers who had written against the corruptions of the government.

到它被攻陷的时候，里面多数的犯人是写了反对政府贪污文章的作家。

The most obvious variation to ovum morphological character was that the color was changed from light green to sepiaceous in embryonic development, and all the ovums were almost hatched after 96h.

在胚胎发育过程中卵的形态特征最明显的变化是颜色从淡绿到深褐色，卵在发育96h后卵基本全部孵化。