说明地

Third chapter illustrate the design scheme for justification development system, amalgamation steer the argumentum;And code design in the detailed design sum the database design of whole system;Recommended the detailed design information of sum of the shuttering cake structure of the aetioporphyrin system;Analyzed the library to manage the system's appliance demand, according to the database design theory proptosis of one-step and one-step earth joint system demand manual, local ER general view, overall situation ER general view, system relation modal, leaven the modal;Arrangement in parallel proptosis the valve key source of the said system code in the procedure the amalgamation commit the interpretation, justification.

第三章说明开发系统的设计方案，并进行论证；以及详细设计中的代码设计和整个系统的数据库设计；介绍了本系统的模块结构和详细的设计信息；分析了图书馆管理系统的应用需求，按照数据库设计理论一步一步地给出了系统需求说明书、局部ER图、全局ER图、系统关系模式，子模式；并列出了该系统的关键源程序中的代码并做解释、说明。

The experiment results show that the yield stress increase significantly when nanometer SiO〓 are added, and casson viscosity is lower than the blank sample.

对不同组分的涂料进行了低剪切速率和高剪切速率下的剪切流动，实验说明，比不加入纳米组分的涂料，加入纳米二氧化硅后屈服应力提高，而Casson粘度降低，这说明纳米二氧化硅能够有效地降低涂料的表观粘度。

The analyses of soil samples indicate that there are high values of physical clay fraction in arbor-bush-grass complex forest and apple orchard, which means strong capability to resist soil wind erosion.

3不同农地表层土壤机械组成分析表明，乔灌草地和苹果园地表层土壤物理性粘粒含量含量较高，说明其抗风蚀能力较强；葡萄园地和灌木林地表层土壤物理性粘粒含量较低，说明其抗风蚀能力较弱。

This article takes the teaching of conic sections as an example. By designing worksheets, teachers can introduce the historical material about conic sections to students. By way of using Apollonius' definition of parabola, ellipse and hyperbola, teachers can introduce the geometric aspect of "conic section" to students. By using the concept of " latus rectum " in Conics , we can connect "conic sections"-- representation of geometrical aspect, with "the equation of conic sections"-- representation of algebraic aspect to improving insufficiency of text books.

同时本文也试著从历史文本中寻找材料，简单举例说明数学教师可以如何应用这些史料在几何单元教学上，例如三角函数的正余弦定理，最后再以圆锥曲线的正焦弦为例，说明如何利用数学史料於此单元的教学，尤其是阿波罗尼斯的《锥线论》中对圆锥曲线的3个命题，将此3个命题的内容与意涵，尤其是正焦弦在圆锥曲线的几何意义上所扮演的角色，将其适当地融入教学中，将可使学生真正学习圆锥曲线的几何知识，而不再只是代数形式的几何知识。

To investigate whether the expression of cdc2 and cyclin B1 in spermatogenic cells during spermatogenesis is actually a temperature dependent event, in situ hybridization, Western blotting and immunohistochemistry analysis were used to study the expression of cdc2 and cyclin B1 in normal and cryptorchid testis. Results showed that heat would differentially hurt male germ cells in different developmental stages during spermatogenesis, especially the pachytene primary spermatocytes. Most of spermatogonia in contralateral cryptorchid testis were not harmed fatally by heat as yet, indicating that spermatogonia could resist to beat to a certain extent. In this case spermatogonia could develop to pachytene/diplotene primary spermatocytes, but they could not acquire the ability to complete the transition from mitosis to meiosis, and then appeared to go through apoptosis. Therefore, we could not find the descendants of meiosis: secondary spermatocytes and round spermatids, elongated spermatids and spermatozoon. The abdominal temperature had no significant influence on the transcription of cdc2 and cyclin B1 in the spermatogonia and pachytene/diplotene primary spermatocytes. In normal rabbit testis, cyclin B1 increased in the pachytene/diplotene primary spermatocytes before meiosis and reached its peak in the spermatids.

为了解精子正常发生过程中cdc2和cyclin B1表达的低温依赖性，我们利用原位杂交和免疫组化等方法，研究了正常和隐睾精子发生过程中cdc2和cyclin B1的转录和翻译调控活动，结果表明：（1）热对各阶段的雄性生殖细胞都有损害，粗线期的初级精母细胞尤为敏感，实验性隐睾内的精原细胞尚未完全受到"致命"影响，说明精原细胞对热有一定的耐受性，但即使成为粗线期／双线期初级精母细胞，却未能获得由有丝分裂过渡到减数分裂的能力，呈现不同程度的凋亡，所以在整个切片中找不到源自减数分裂的产物----次级精母细胞、圆形精子细胞，更谈不上长形精子细胞和精子的形成；（2）腹腔高温未明显地影响隐睾精原细胞和粗线期/双线期初级精母细胞中cyclinB1和cdc2的转录，说明高温并不是通过影响cyclin B1和cdc2的转录活动而导致生精过程阻断的；（3）正常兔睾丸组织中，〓在精原细胞和粗线期／双线期精母细胞中均有表达：cyclin B1蛋白在减数分裂前期的粗线期／双线期初级精母细胞中的表达量增加，于变态末期的精子细胞中达高峰。

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Explanation, according to this view, is simply accounting for facts on the basis of deduction from a known law or laws, or accounting for some subordinate law on the basis of a deduction from some more general law or laws.

根据这个观点，解说就是简单地说明已知定理或定律推理基础上的事实，或说明某些从一般定理推理出的附属定律。

Also, jade earrings were on the ground, positioned as if they'd fallen from long-gone ears—another clue the skull may have disintegrated in place.

而且，绿玉耳环是在地面上的，这个位置好像说明其可能是长时间脱落的耳朵上的——这是另一个线索说明头骨可能已经在这里破裂。

With large-scale model tests of open-cut box tunnel and shallow bored horseshoetunnel intersecting orthogonally and obliquely with active ground fissure zone individually, the adaptability of sectionalized tunnel passing through active ground fissure is studied,theresults show that the sectionalized tunnel with flexible joint can bear very large sheardeformation,and the deformation and secondary stress of adjacent sectionalized tunnel underthe action of ground fissure is small,meantime many sectionalized tunnels can eliminatepartly the effect of active ground fissure movement,have a good capability of adapting itselfto the large deformation.

8通过分段设缝的明挖箱形隧道和浅埋暗挖马蹄形隧道分别正交和斜交穿越地裂缝带穿的大型模型试验，对分段设变形缝的地铁隧道穿越地裂缝带的适应性进行了研究，结果表明分段式柔性接头隧道能承受较大的剪切变形，相邻衬砌管段变形和次生应力均较小，同时多段设变形缝具有很好的消化地裂缝变形的效果，从而说明多段设变形缝加柔性接头连接的地铁隧道具有较强的适应地裂缝活动大变形的能力。

Species diversity in three types of vegetation were relatively higher in August, and lower in May. Species diversity of vegetation was highest in the reconverted grazing land, lower in the semi-fixed dune land, and lowest in the natural reconverted farmland. The stability of vegetation in the reconverted grazing land was relatively high and strong buffering function to changing environment among three types of vegetation.

放牧自然恢复地植被的物种多样性相对较高，半流动沙地相对较低，退耕自然恢复地最低，这说明相对于半流动沙地和退耕自然恢复地，放牧自然恢复地稳定性相对较高，对环境波动的缓冲功能强。

Methods: Five patients with parkinsonism or dystonia were assigned to general anesthesia using an modified endotracheal tube.

本实验依照人体实验之相关规定进行，五位患有帕金森氏症或肌张力异常的病人接受神经立体定位手术。

If you can benefit from this book, it is our honour.

如果您能从本书获益，这将是我们的荣幸。