描述

According to the deficiency of event tree analysis in safety evaluation,this paper introduces a dynamic event tree analysis method and the mathematical description is given as well.

针对传统的事件树分析方法在安全性评估中的局限性，在动态事件树分析方法的基础上，给出了其数学描述，并将其应用于导弹安全自毁系统安全性评估中，以描述导弹安全自毁过程中的动态特性。

Moreover, the intensity corresponding to surface excitation in effective energy loss functions decreases with the increase of primary electron energy.

在用Monte Carlo方法模拟电子与物质相互作用过程时，常用Mott截面描述电子与原子的弹性碰撞，而用介电函数理论描述电子的非弹性散射。

The author first reported the social phenomenon and synchronizing development incryptosporidia,the dynamic process of the sporozoites or merozoites aparted from theirparent substances and developed into trophozoites,the culture of C.baileyi in chickenembryo,and the excysting process without both the trypsin and the sodium taurocholatein 37℃ water.The high levels of excystation(60%)oceured at 37℃ water showedthat temprature was very important in cryptosporidia excysting process.

在国内首次观察和描述了薄壁型隐孢子虫卵囊；首次报道隐孢子虫具有群体寄生现象和同步发育特征；首次描述了隐孢子虫的裂殖子或子孢子离开母体和发育为滋养体的动态变化过程；首次应用粪便中纯化的C.baileyi卵囊感染鸡胚成功，并用37℃水脱囊，其脱囊率高达60％，表明温度对隐孢子虫的脱囊具有重要作用，无需胰酶和牛胆酸钠的参与。

The applications designed and developed by the new method are more stable, expansible, maintainable and secure.

模型主要偏重于对业务的描述，而不是对实现描述，在进行需求分析的同时，即可完成设计、建模的过程。

The degree distribution of nodes shows scale-free property in Space L, and exponential distribution property in Space P.

其节点的度分布，在Space L方法的描述下具有无标度特性，在Space P方法的描述下具有指数分布特性。

As for the factitiously specified allowable values,such as allowable deflection,allowable amount of wear,and so on,their magnitudes,which are confirmed on the basis of empirical formula,often have an interval value or a limit value,therefore they can be described suitably by minor type membership function, As for various strength values of parts,such as tensile strength,compression strength,contact strength and so on,their magnitudes,which are often confirmed only by approximate mean,can be described suitably with middle type membership function.

对于人为规定的各种许用值，如许用挠度值、许用磨损量等，根据经验公式确定它们的大小时往往有一个区间或一个极限值，宜用偏小型隶属函数描述，对于零件的各种强度值，如抗拉强度、抗压强度、接触强度等，实际中往往只能确定其近似的均值，宜用中间型隶属函数描述。

The structure combination and formation factor of earth-rock aggregate are complex,nondeterministic and heterogeneous,so it is difficult to describe quantitatively with traditional and linear theory.

土石混合体的结构组成与成因非常复杂，具有明显的非确定性和非均质性，很难以传统的、基于线性分析基础之上的技术方法进行定量化描述，并对描述土石混合体微观结构的粒度分形特性进行研究。

This paper also proved that the formal representation is faithful to RBAC model.

用描述逻辑的符号给出了RBAC中主要的元素和关系的形式化定义，并证明了这种描述逻辑表示对于RBAC模型的忠实性。

The main idea of the FLC is described in Section 3 while Section 4 describes the xx strategies.

第3节描述了flc的主要思想，第4节描述了xx策略。

He is good at fleshing out the lives and concerns of the people who stand to gain from reducing particular trade barriers, as well as the worries of those who oppose change.

他不但擅长描述反对改变者们的担忧，还擅长描述人们的生活以及他们的忧虑——这些人经常受贫困所扰，但坚持要求减少某些贸易壁垒以从中获利。

With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务，乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐，因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。