性质上的

In virtue of this,some properties of convex polyhedroid are studied and the definite values and extreme values of convex polygon in Euclidean plane are extended to the case in n-dimensional space.

提出n维欧氏空间中广义重心坐标的概念，建立了广义重心坐标下两点间的距离公式，并利用于研究凸多胞形的若干性质，将欧氏平面上凸多边形的一些定值与极值性质推广到n维空间。

A number of properties of countable topological space were given systematically, such as its countability, separability, compactness and connectedness, including their proofs on the basis of the nature of topological space, real number space and corresponding theorems.

摘要在可数补拓扑空间的拓扑性质的研究基础上，系统的给出了可数补拓扑空间的可数性，分离性，紧致性，连通性等性质，并给予证明。

In this paper,we will introduce semi-continuous function and prove a piece of valuable nature about semi-continuous function with the theorem of finite covering .

本文介绍了半连续函数的定义并利用有限覆盖定理证明了上半连续函数有上界的这一重要性质，从而推广了上半连续函数的某些性质并给出相应的证明

Week 5 The definition and nature of derivative, the geometric meaning of derivative, the relation between the derivability and the integral, derivation rule.

第4周 连续的定义，连续函数的性质，初等函数的连续性，闭区间上连续函数的性质。

It has expounded the factuality of human history on the basis of the similarities and differences between the history of nature and that of humans, and has elaborated the nature of human history considering the nature of production mode so that it has transcended the historical teleology of Kant and Hegel.

它从自然史与人类历史的不同性与相似性上阐明了人类历史的事实性，从生产方式的性质阐述了人类历史的自然状态性质，从而超越了康德、黑格尔历史目的论。

We consider an auxiliary function related to the Cauchy transform of the measure μ,, and get that it preserves sign on negative real axis. The property play a role in the study of the transform.

我们考虑了与测度μ的Cauchy变换相关的一个辅助函数，得到了它在负实轴上具有保号性，此性质对研究该变换的一些有趣的分形性质起作用。

First we give the definition of semicontinuous and subharmonic functions and the propertities of the semicontinuous and subharmonic functions and then introduce the notion of plurisubharmonic functions and the propertities of psh functions, then we give the definition of closed positive currents and the relation between psh functi.

首先总结了半连续函数和次调和函数的定义及其性质，然后在此基础上介绍了多次调和函数的定义及其性质，引入了正闭流的定义，说明了正闭流与多次调和函数之间的联系。

Based on a comparative method, this article looks back on the origin and development of the condominium system, comes to the conclusion through analyzing and comparing different theories that the condominium concept of trialism is more scientific and reasonable. Based on the above discussion, conducts further study on its properties and characters, and points out that condominium is a kind of compound ownership including exclusive right,common right and member's right ,which has many differences from traditional real estate ownership.

本文运用比较研究方法，回顾了建筑物区分所有权制度的起源和发展，通过对各种学说的分析，认为以三元论说界定建筑物区分所有权较为科学合理，在此基础上，探讨了其性质和特征，提出建筑物区分所有权的性质是一种包括专有权、共有权和成员权的复合性物权，其与传统不动产所有权存在诸多差异。

Studies on combining optical absorption and PL from free-standing PS films with porosities in a range of 41% to 94% have been performed.

三、详细研究了在多种硅衬底上制备的多孔硅自支撑膜的光吸收和光致发光性质，并在很宽的多孔度范围内(58-94％)对多孔硅的光吸收和光致发光性质进行了对比。

In the chapter 2 of this dissertation, the modification of CaCO_3 based on interfacial design and the application in the toughening of PVC were studied.

在CaCO_3表面键合上不同的表面改性剂，并以接触角测定的方法，研究了CaCO_3改性前后的表面性质及其与PVC的界面性质。

And discuss some key point of integrated management system design, include hazard identification and risk assessment and risk control in the occupational health and safety management, the measure of satisfaction target of customer, the flawlessness of law system, the integration of the integrated management system and enterprise standardization system, unify lead institution and work orgnization, integreted internal audit and integrated management review.

同时，论述了一体化管理体系构建中的几个主要问题，包括职业健康安全管理中的危险源辨识、风险评价和风险控制、顾客满意度的科学监测、法律、法规体系的完善、一体化管理体系与企业标准化体系的有机结合、统一的领导机构和工作机构、一体化的内部审核和管理评审。

Deepwater Taranaki is investigated for its petroleum potential, using all available seismic data tied to shallow-water wells.

运用与浅水井相关的现有全部震波探测数据考察了深海区塔拉纳基盆地的油藏前景。