中板

In blastula embryos and 50% epiboly embryos, the zygotic pou2 transcript is also distributed in every blastomere cell. At the stage of 90% epiboly, expression of pou2 converges to the dorsal midline of embryos and locates in two waves of lateral neural plate and two transverse stripes in the brain region. In embryos at 100% epiboly, pou2 transcript is restricted in the neural plate and areas of presumptive midbrain amid himdbrain. From somite stage, gibel carp pou2 can not be detected any more, which is consistent with the RT-PCR result.

在高囊胚期和50%下包期，高度表达的合子转录本仍在所有的胚盘细胞中，但至90%下包期时，pou2的表达向胚胎背部的正中线汇聚，集中在神经板的两侧区域和脑部的两条横向条带在100%下包期时，pou2的表达集中在神经板的中间区域以及预期形成的中后脑区域至体节期时，转录本消失，这与RT-PCR结果高度一致。

In the study of moisture absorption and desorption in composites, Fick s law is often used to describe the diffusion process of water in the composites.

在研究复合材料层合板的吸湿和退湿过程中，常常采用菲克定理来描述水分在层合板中的扩散过程。

The fabrication of SiNW was used by "electroless etching" which was when (100) c-Si was immersed in the solution containing silver nitrate and hydrofluoric acid. Si was etched by fluoric ion and released electrons to combine with silver ion to form Ag particles.

制作矽奈米线阵列的方式为无电镀蚀刻法，系将一p-type(100)之矽基板置入氢氟酸与销酸银的混合蚀刻液中，当溶液中之氟离子与矽基板接触后，矽即被解离成矽离子并放出一颗电子。

The relation between the performance of hot rolled plate and the nitrogen content in the steel are discussed.

讨论了热轧板性能与钢中氮的关系；指出了钢中氮质量分数的减少可降低热轧板屈服强度，且满足供冷轧基料的要求。

Based upon the assumptions of small deformation, the unretractility of the beam's axis and the inextensibility of the plate's neutral surface ("the method of geometrical deformation constraint"), we can obtain the geometrically nonlinearized formulae of the beams and plates. Accordingly, the "dynamic stiffening terms"would be naturally cooperated into the dynamic equations of flexible multibody system if combined with the linerization of kinematic parameters at the proper stage.

利用杆类柔性体轴线的不可伸缩性和板类柔性体在中面内的不可伸展性，并结合小变形的假设，从而可获得杆类和板类的几何非线性变形表达式；以此为基础，在适当阶段对运动学参量进行线性化处理，可确保"动力刚化项"在建立柔性多体系统动力学方程过程中自然地形成。

First mostly contraposing hull deck structure it goes along FEA analysis, discuss the different influence degree of calculational results between the different simplifications of the mathematical model, thereinto mostly analyse five different simplifications of the deck model; Second contraposing hold section and hull deck structure it goes along FEA analysis together, discuss the different influence degree of calculational results between the different elements style, gridding number and gridding density, thereinto mostly analyse the difference between adopting 8 node shell element and 4 node shell element, nondense gridding and thick gridding, and numerous gridding number and few gridding number, In the end mostly contraposing hold section structure it goes along FEA analysis, discuss the different influence degree of calculational results between the different boundary conditions, thereinto mostly analyse the difference between adopting CCS boundary conditions and LR boundary conditions.

首先主要针对船体甲板结构进行分析研究，讨论结构简化不同对有限元计算结果的影响程度，其中主要研究分析了五种不同甲板结构简化模型；紧接着针对舱段与甲板结构一起进行分析研究，讨论单元类型，网格数量与密度的不同对有限元计算结果的影响程度，其中主要研究分析了分别采用8节点板壳单元与4节点板壳单元的不同，以及分别采用疏的网格与密的网格，多的网格数量与少的网格数量的计算结果的差异。最后主要针对舱段模型进行分析研究，讨论不同的边界条件对有限元计算结果的影响程度，其中主要研究分析了分别采用CCS舱段边界条件与LR舱段边界条件进行有限元计算而带来的结果上的差异。本文第二部分为港工建筑物中的大直径薄壁圆筒结构的有限元比较分析。在研究大圆筒的有限元比较分析中，主要讨论用不同的网格密度与数量来划分网格引起的差异。其中用了网格密，数量多与网格疏，数量少两种模型进行大圆筒结构的有限元分析对比

The construction methods of a new-slab are introduced which is made of profiled sheet and OSB board using in an extension project.

介绍某扩建工程中新型楼板——压型钢板+OSB板的建筑做法，剖析该新型楼板的施工过程及施工工艺，同时提出解决此类新型楼板施工过程中一些常遇难题的技术方法，为多层钢框架压型钢板+OSB板新型楼板的施工提供借鉴依据。

Part two: Urethroplasty by using skin oversleeve with vesicomucosa to treat hypospadias.

为解决单独使用膀胱粘膜尿道成形术后并发症较多的问题，我们设计了皮肤袖套式膀胱粘膜尿道成形术治疗重型尿道下裂及部分首次手术失败的尿道下裂患儿，即用游离包皮内板或游离阴囊中隔皮片在尿道外口处做成一短段尿道，然后用游离膀胱粘膜形成全段人工尿道并从包皮内板或游离阴囊中隔皮片做成的尿道内穿出。

All of these are a reliable basis for the planetary gear transmission in scraper conveyer in wear-resistance design.

探讨了刮板输送机中行星齿轮传动的弹性流体动力润滑计算，并推导出相应的计算公式；分析了传动润滑状态与磨损的关系，为刮板输送机中行星齿轮传动的耐磨损设计提供了必要的理论依据。

However, this butterfly valve in the course of the following questions remain: First, as a result of hard and soft multi-layer stacked ring fixed in the valve plate, when the valve plate when the media always state of the formation of its positive sealing surface erosion, sheet metal dissection of the soft-sealed after flushing with by a direct impact on seal performance.

但是，这种蝶阀在使用过程中仍然存在以下问题：一、由于多层软硬叠式密封圈固定在阀板上，当阀板常开状态时介质对其密封面形成正面冲刷，金属片夹层中的软密封带受冲刷后，直接影响密封性能。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。