三次

In this paper,we give the representation of integral closure of a cubic extension about general Neotherian unique factorization domain (2,3 are not units). Then we give a series of integral number about a cubic extension.

本文在前人研究的基础上，去掉2，3可逆的这一条件，给出了诺特唯一分解环上的三次扩张的整闭包的描述，并由此刻画了一批该扩张下的整元。

Neotherian unique factorization domain; cubic extension; integral closure

诺特唯一分解环；三次扩张；整闭包

At last, we deduce integral equation of control system with third nonlinear isolate vibration.

同时针对含有三次非线性隔振的控制系统，对其积分公式进行了推导。

Then the relation between Wp and Np can be obtained by solving the linear formula through integral.

提出了将该线性表达式积分求解，就能得到Wp与Np的三次多项式关系式，并结合大庆油田北一二排西区块详细说明了求解过程。

Characteristics of dynamic interfacial tension are one of the important indexes of the performance of surfactants and polymers in EOR.

以表面活性剂和聚合物进行三次采油的方法得到人们的普遍关注。

The results showed that the copolymer possesses good thickening property, and the performance of decreasing the interfacial tension between oil and water.

由于高分子表面活性剂具有高分子的增稠性和低分子表面活性剂的表面活性，在三次采油中具有广泛的应用。

Therefore,investigating the dynamic interfacial tension of surfactants and polymers in EOR in the interests of fundamental research or industrial applications is of great importance.

油水动态界面张力的特征是评价表面活性剂和聚合物在三次采油中性能的重要指标。

In this paper,the dynamic interfacial tensions of different surfactants were investigated in their own field or other field.

因此，研究三次采油用表面活性剂和聚合物的动态界面张力具有重要的理论意义和实践意义。

A week earlier, the International Labor Organization released its third Global Report on Child Labor.

一个星期前，国际劳动组织发表的第三次全球童工报告。

In this paper an efficient method that can interpolate cubic NURBS curves is proposed for generating the subdivision surfaces.

鉴于此，提出了一种高效的可以插值三次NURBS曲线的细分曲面生成方法。

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。