四对的

The first model is the optimization problems with s linear objective function subject to a system of fuzzy relation equations and a system of fuzzy relation inequalities, which are solved by using path method and 0-1 integer programming with branch and bound method.

第一种为约束为模糊关系方程和模糊关系不等式的具有线性目标函数的优化问题，采用路径法及0-1整数规划中的分枝定界法对其求解；第二种为约束为模糊关系方程和模糊关系不等式的格线性规划问题，采用直接法、路径法及0-1整数规划法对其求解；第三种为模糊关系不等式为模糊的，即约束中有一个可接受的容差，采用容差法及正负理想法对其求解；第四种是一种新的可能性模糊线性规划问题，采用模糊数大小比较法、"切片-粘贴"法及正负理想法，并设计了随机模拟的遗传算法对其求解；第五种为期望值模型，利用期望值将其转化为清晰约束系数的线性规划问题的方法。

Reed, Cattail, Calamus and Canna were the plants adopted in this study, watching the change of the Total Nitrogen and recording the data.

本文选取芦苇，菖蒲，美人蕉和香蒲等四种南京地区常见的人工湿地常用植物作为供试植物，对其在春季对生活污水总氮去除效果的数学模型进行研究。

At the same time, the components of EDFA , principle and characteristic parameter are introduced.

第四章 总结与展望最后对我们的实验工作做一个总结，并对以后的工作作了展望。

Another route of Chekhov's influence is to be analyzed in Chapter Four, i.e. through Gorky.

第四章分析契诃夫对中国戏剧影响的另一条途径，即高尔基戏剧对中国的影响。

The effect of acetic acid and its consumption, chloranil and its consumption on the preparation of TAMD by means of dioxygen liquid-phase oxidation of TMAL was probed into, and the results showed that both of them had great influence on the yield of TAMD.

探讨了冰乙酸及其用量、四氯苯醌及其用量对氧气液相催化氧化孔雀绿隐色体制取孔雀绿醇色体的影响，发现二者对醇色体的收率和纯度均有很大影响。

CHAPS efficiently solubilized the P450 of microsomes in midgut and fatbody, while lubrol PX , emulgen 911 and sodium cholate were less efficient.

对CHAPS、Lubrol PX、Emulgen 911和胆酸钠四种去垢剂的比较研究发现：CHAPS对中肠和脂肪体微粒体P450的增溶效率最高，Lubrol PX、Emulgen 911和胆酸钠较差。

In the fourth chapter on the basic of study on actuality and analyzing on trade of circumambience, and characteristic of the city, idea and strategy were brought forward to protect and reconstruct Dajichang Alley.

文章第四部分通过对现状的研究、周边环境的分析，并在对西安城市特色研究的基础上，提出了对大吉昌巷改造的理念和策略。

In this paper four non-spherical surface types have been chose, ellipsoid surface, parabolic surface, pointed arch surface and conical surface. Base on the best fineness ratio, four surfaces are modeled, and their properties are analyzed in detail.

本文选择椭球面、抛物面、尖拱面、圆锥面这四种非球面面型整流罩，在基于整流罩最优的长径比的基础下，对各种情况分别进行建模，并对其光学性能进行了详细分析。

Chapter IV analyses the current stage of Chinese asset securitization, points out the disadvantages of the current system, the future development and looking forward to the future of China's asset securitization.

第四章对中国资产证券化目前所处的阶段进行了分析，指出了现阶段制度不足及将来的发展建议，同时对中国资产证券化未来发展进行了展望。

Chapter four reviewed the legislation situation in ancient period of China and in other countries and areas in the world for the crime, and provided some suggestion on applicable death penalty for being against the crime in China daringly.

第四部分通过回顾我国古代打击拐卖妇女犯罪的立法情况，并对世界其他国家和地区打击拐卖妇女犯罪立法情况的初步了解，对我国在打击拐卖妇女犯罪适用死刑方面进行了大胆探讨。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。