机制

The technique of whole embryo culture provides a sensitive model to evaluate both the effects, and their underlying mechanisms, of drugs and environmental chemicals on embryonic development, independent of maternal influences. Thus this study was designed to investigate the relationship between teratogenesis of CP and apoptosis by using mouse whole embryo culture.

迄今为止CP致畸作用机制研究仍有许多疑点，由于全胚胎培养方法排除了母体等因素的干扰，在研究致畸作用机制方面具有许多明显的优点，故本论文采用该法对CP致畸作用机制进行了研究。

It has been initiated the modelling strategy to determine independently the mechanisms of state transformation, internal constraint and control of event enabling, and the discrete clock state model for DEDS is given.

首次提出独立地确定系统的状态迁移机制、事件使能的内部约束机制与控制机制的建模思想，给出了DEDS的离散时钟状态模型。

To compare it with GATT dispute settlement mechanism, the judicial tropism is one of the most important characteristics of WTO dispute settlement mechanism.

与GATT争端解决机制相比较，WTO争端解决机制的"司法化"取向是WTO争端解决机制的最重要的特点之一。

The results show that the undissolved silicon particles in the melt become the cores of primary silicon precipitated in solidification and there is a close relationship between the shape of primary silicon and undissolved silicon particles. The growth of silicon follows not only the twin plane re-entrant edge mechanism, but also layer mechanism as well. Meanwhile, the shape of primary silicon also relies on kinetic surroundings, such as the transmitting of solute. At higher overheating temperature, the shape of primary silicon becomes the star-shape and tree-shape.

结果表明：重熔过程中熔体中未溶解的硅相粒子，在凝固过程中可成为初生硅生长核心，并且未熔颗粒与初生硅形状之间存在明显对应关系；初生硅的生长机制不是惟一的，既可以以孪晶凹角机制生长，还可以以层状机制生长，初生硅最终形状还要取决于溶质传输等动力学环境；随着熔体过热温度的升高，凝固组织中初生硅形状由多边形向星形及树枝状转变。

Based on the market microstructure theory, this paper firstly discusses how the different trading mechanisms decide the price and the relationship of the trading mechanism and the volatility of return. Then selecting the stocks synchronously listed in the market of Mainland China and Hong Kong as the sample, we empirically analyze the relationship of the trading mechanism and the volatility of return. After describing the originality variance ratio of the markets, this paper explains the outcome of the empirical and makes a GARCH (1, 1) model for further analyze.

本文以金融市场微观结构理论为基础，首先从理论上探讨了不同的交易机制对股票价格的确定过程，以及交易机制与股票价格波动性的关系问题；接着本文选用同在中国大陆和中国香港地区上市的公司股票每日的开盘和收盘价格为样本，分别以收益率的原始方差比和GARCH(1， 1)模型估计的方差比实证分析了交易机制与股价波动性的关系。

Secondly,for widespread IPO underpricing under Bookbuilding issuing method and abnormal high IPO underpricing in Chinese stock market,we propose policy recommendations at two different levels.The policy recommendation for Chinese stock market is to introduce short-selling mechanism,for widespread IPO underpricing under Bookbuilding issuing method is to open when-issued market of IPO shares to improve Bookbuilding issuing method.

然后，针对累计投标询价机制下的IPO抑价现象尤其是中国股市IPO抑价畸高的现象，从两个层面提出相关政策建议：针对中国股市的政策建议是引入卖空机制；针对全球股市普遍存在的IPO抑价现象，提出的政策建议是开放IPO股票市前交易来完善累计投标询价机制。

Along with the outspread of china's economy reform, market competition play abasic role in china's economy. Economy scale grow rapidly under market economy, whichresult in monopoly directly; on the other hand, authority mechanism of the inhere systemshaped under the nation monopoly. Consequently, monopoly in china is complex and oddwith the interlace of economy monopoly and administration monopoly, which cumberchina's free competition order.

随着我国经济体制改革的展开，市场机制及其竞争机制开始发挥基础性的调节作用，一方面市场竞争开始获得了生存空间，经济规模迅速增长，也便有了垄断产生的土壤；另一方面，原有体制中颇具根基的行政化、官本位权力机制，在国家垄断势力的依托下逐步成长。

The dual scale automaton model is improved by introducing the rule of synchronization development, mechanism of reiteration and delay law of plant growth from the viewpoints of botany,which make it possible to generate almost all types of the inflorescences defined by botanists, and to simulate acropetal and basipetal flowering sequences.

通过在双尺度自动机模型中引入&同步生长机制&和&重复生长机制&，能够模拟所有植物学中给出的花序类型。并通过应用&生长延时机制&，实现了&向顶开花&和&向基开花&两种开花顺序的模拟，避免了L系统用成花信号控制的缺点。最后通过与L系统的比较，证明该方法简单实用

The results show that an approximate parabola curve of infiltration depth versus infiltration time is proved. It is indicated that the main mechanisms of continuous netlike Si phase are dissolution-deposition and appendiculate deposition of Si.

组织观察结果表明， Si相呈网络状连续分布，其形成机制主要为浸渗时Si颗粒的溶解-析出机制和凝固过程中Si的附着析出机制。

In this years,Web Service have developed quickly,it defines a Web Service protocol stack by XML,ensureing the security in Servicen by SOAP、WSDL and UDDI. Facing to the Internet to unify appliedly the service register, discovers, bind to settle with gather mechanism,becoming the wide area environment descends a kind of main mechanism that realizes operates with each other, and get the academic circles with the industry field of extensive approbation.

近年来，Web 服务技术已得到快速发展和应用，它采用可扩展标记语言定义一组Web 服务协议栈，以WS-Security 为代表的Web 服务安全机制保证了服务交互过程中的安全性，通过SOAP，WSDL，UDDI等开放协议和标准，提供了面向Internet 应用的统一服务注册、发现、绑定和集成机制，成为广域环境下实现互操作的一种主要机制，并得到学术界和产业界的广泛认可。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。