查询词典 advantages and disadvantages

Ng inside the gasifier and the advantages and disadvantages of the the gasifier were detailedly analyzed; at the same time realization conditions, formation mechanism and implementation approaches of flameless oxidation technology also be explored in detail.

由此设计了一种新型干煤粉气流床气化炉，论证了高灰熔点煤在该气化炉上实现高效气化和液态排渣的可行性进。

And then,the article briefly analyzed the advantages and disadvantages of the subjectiveevaluation method. According to the fact of the research, it confirmed to simulate darkvision environment of landscape illumination in the lab by the way of the subjectiveevaluation investigation. I classified he confirmed homochromy chromatic lightsaccording their brightness, and used the computer projection system which had beenmeasured to project and reappearance, then carry on the subjective evaluationexperiment of chromatic light feeling preference faced to the people of big swatch.

而后简要分析了主观评价方法的优缺点，结合该研究的实际情况确定利用主观评价调查的方法在实验室模拟景观照明的暗视觉环境，将已确定的单色色光按明度分级，通过已完成标定的计算机投影系统投射再现，对大样本的受试人群进行色光心理感受倾向性的主观评价测试实验。

The advantages and disadvantages of the hydrometallurgical treatment of chalcopyrite concentrates and its preliminary economics are compared with those for the current best practices in copper smelting and refining.

目前有几个冶炼厂，在一个单一的熔炼炉内熔炼超过100万t的铜精矿。回收超过99%的二氧化硫，在自动化电解精炼厂生产出超过3

This thesis introduces the domestic and international research development on techniques of preventing against and killing archives pests briefly at first, on the basis of advantages and disadvantages of chemical 、 physical、 biological pest-killing techniques and practice of realistic archives preservation,determines to research lethiferous effectiveness of high temperature pest-killing technique、 low temperature pest-killing technique、 microwave pest-killing technique and high pressure nitrogen suffocation pest-killing technique,and affect on durability of making materials of paper archives systemically.

本论文首先简要介绍了国内外档案害虫防治技术研究进展，在分析化学防治法、物理防治法和生物防治法的优缺点及现实档案保管工作实践的基础上，确立系统研究高温杀虫法、低温杀虫法、微波杀虫法、高压充氮杀虫法的杀虫效力及对纸质档案制成材料耐久性的影响。

Upon the problems mentioned above, this paper focuses on the following work:? Analyzes the advantages and disadvantages for the key researches both in and abroad;? Studies some existing international standards and protocols including SET and ASC X9;? Gives the designing rules for the secure scheme then proposes a general simple model for mobile payment;? A secure scheme called SeMo is designed according to the different security needs for lineate links and wireless ones;? Analyzes the security for the scheme still basing on the two distinct links, which improves the scheme fully fulfilling the security requirements such as: authentication, integrity, confidentiality and non-repudiation.

针对上述问题，本文作了以下几点工作：●分析了国内外对移动支付研究的现有关键技术的优缺点；●学习了一些现有的国际金融规范和标准为准则；●借鉴安全电子交易模型方案，并参考了ASC的X9系列规范，提出一个简单可行的移动支付一般模型；●根据该模型尝试着根据无线和有线两个不同接口对安全性的需要，设计出移动支付系统的安全方案SeMo；●然后再根据接口的不同对该安全方案进行分析，证明该方案能解决移动支付的安全问题，也就是手持设备的认证问题以及数据保密性、完整性等问题。

Currently, the reconstruction materials include autologous, allograft, xenograft, synthesized nonabsorbable and absorbable patches, and acellular patch. They have specific advantages and disadvantages.

目前的重建材料有自体组织、同种异体移植物、异种移植物、合成的不可吸收补片、合成的可吸收补片、脱细胞补片等，各有其优缺点。

A model of rough sets under intuitionistic fuzzy equivalant relations is systematically investigated, and the definitions of pos itive field, dependence degree and nondependence degree are given. An attribute reduction algorithm based on intuitionistic fuzzy rough sets is particul arly analyzed,and the advantages and disadvantages are compared.

文中描述了直觉模糊等价关系下粗糙集的模型，并在此基础之上定义了正域、依赖度与非依赖度概念，然后详细分析了直觉模糊粗糙集属性约简算法。

This review focuses on the current research progress of the liver cell differentiation source, and it also discusses the advantages and disadvantages of various hepatic stem cells and nonhepatic stem cells, expecting to provide a reference for liver cell source selection during tissue engineering, an adequate and suitable source for bioartificial liver and hepatocyte transplantation and to help to treat liver diseases.

本文着重论述了目前肝脏细胞的分化来源研究进展情况，并对各种肝源性和非肝源性干细胞的优缺点进行了讨论，以期为肝组织工程选择细胞来源提供参考，为生物人工肝、肝细胞移植提供充足、合适的细胞来源，协助治疗肝脏疾病。

In order to study these algorithms systematically and deeply, they are reviewed in this paper based on c-means algorithm, from metrics, entropy, and constraints on membership function or cluster centers. Moreover, the advantages and disadvantages of the typical fuzzy partitional algorithms are discussed.

为了能更为系统和深入地了解这些聚类算法及其性质，本文从改变度量方式、改变约束条件、在目标函数中引入熵以及考虑对聚类中心进行约束等几个方面，对在C-均值算法的基础上得到的基于划分的模糊聚类算法作了综述和评价，对各典型算法的优缺点进行了实验比较分析。

Every nest type in spectrum has own advantages and disadvantages, and genetic and environmental factors confine what kind of nest type passerine adopts.

在变化谱上的每种鸟巢都有自己的利弊，选择哪种类型的巢是由鸟本身的遗传和环境特征两方面的因素决定的。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。