优缺点

The advantages and disadvantages of different processing methods for ferroelectric thin films are discussed.

文摘：综述了铁电薄膜、多层膜和异质结构研究的新进展，分析了铁电薄膜不同制备方法的优缺点。

Over the years, in order to improve combat survivability of aircraft, many techniques suppressing such explosion have been explored. The techniques can be divided into tWo types. One belongs to passive damage suppression, such as installing expanded metal material in fuel tank. The other belongs to impassive damage suppression, such as nitrogen diIution when fuel tank needs. Each type has advantages and disadvantages respectively.

多年来，为了提高飞机的作战生存力，人们研制和开发了多种燃油箱防爆技术，这些防爆技术主要分为两大类，一类是被动抑制损伤法防爆，如在燃油箱内充填防爆材料；另一类是主动损伤抑制法防爆，如在燃油箱内加入惰性气体，使的燃油箱的油气混合物惰化，从而达到防爆目的，但两类防爆方法各有优缺点。

What is the benefits and drawbacks of teleworking ?

远程办公的优缺点是什么？

Different types of drilling fluid systems were used in over 30 under-balanced wells by New Star Company of SIN OPEC in recent years, and the low solids polysulfonated drilling fluid, solids free salt-water polymer drilling fluid, and low density emulsified diesel drilling fluid were focused in this paper, with their laboratory evaluation results and field applications desc...

针对中国石化新星公司近几年在不同地区施工的30余口欠平衡井所用不同类型的钻井液体系，介绍了低固相聚磺钻井液、无固相盐水聚合物钻井液、低密度乳化柴油钻井液3种钻井液的室内性能评价结果以及现场应用情况，并在此基础上总结分析了各钻井液体系所适用的地层以及其优缺点。

This paper introduces TSP firstly,and then discusses the six effective methods generallyGenetic algorithm,Ant Colony algorithm,Hopfield Neural Network,Simulated Annealing algorithm,Artificial Immune alg...

文章介绍了什么是TSP，论述了目前求解旅行商问题较为有效的六种智能算法(遗传算法、蚁群算法、Hopfield神经网络算法、模拟退火算法、人工免疫算法、混合优化算法)，并简单阐述了其优缺点，给出了未来针对TSP问题的研究重点。

First, some current methods and theories of NLU knowledge expression and thecharacteristicofnaturallanguagueindesigndomainarepresentedand compar...

本文通过分析现有的知识表示方法的优缺点和设计领域自然语言的特点，给出了基于自然语言理解的领域自动建模系统的知识表示方法，并构建了领域自动建模系统的知识库。

Pseudo-code of every variants of particle filter is given. Several variants of particle filter such as SIR、ASIR、RPF are compared. The advantages and disadvantages of them are discussed.

给出了各种粒子滤波算法的伪代码，对几种常见的粒子滤波器(SIR、ASIR、RPF)进行比较，分析了各自算法的优缺点。

Many methods is overviewed and many new techniques are also proposed.The graph-based geometric constraint solving method proposed by C.M.

本文首先回顾了CAD技术发展的历史，然后进一步详细分析了国内外一些典型的约束求解方法，并对各种方法的优缺点进行了详细的评述和综述。

Hepatology Digest: The assessment of the need of transplantation is mainly based on the King's or the Clichy's criteria so could you discuss their relative advantages and disadvantages?

国际肝病：是否需要进行肝移植的评估标准主要是King's标准还是Clichy's标准，您能否比较一下这两者的优缺点？

This paper reviews and summarizes the progress in this field as follows: the mathematical model and the difficulty of the analytical solutions is introduced; discusses the latest progress of the numerical solutions is discussed; the finite difference method, the Godunov method, the Boltzmann method, and the KFVS method of one-dimensional dam-break problem are introduced; the TVD method, the discontinuous finite element method, the finite volume method and characteristic method of two-dimensional dam-break problem are discussed; the applicability, the advantage and the disadvantage of each method are analyzed; and the progress in the numerical calculations of flow of fluid with free surface are presented.

回顾和总结了国内外对溃坝水流演进问题的研究进展：介绍了溃坝水流的数学模型及解析解法存在的困难，进而讨论了数值解法的最新进展；论述了求解溃坝水流一维问题的有限差分法、近似黎曼解的Godunov格式法、Boltzmann法、KFVS法和二维问题的TVD格式法、间断有限元法、有限体积法、特征线法，并分析了各种方法的适用范围和优缺点，及讨论了限制函数的使用；介绍了利用自由水面追踪方法计算溃坝水流的研究进展，并根据目前存在的不足和实际工程的需要，提出了进一步研究的方向和发展趋势。

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。