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The pressure drop of the compound tray can be regarded as consisting of dry plate pressure drop, clear liquid resistance, liquid surface tension resistance, and packing pressure drop. The model that has established can fairly predict the pressure drop of the compound tray, the value calculated by the model compared with that detected by experiment is less than 20%.

复合塔板的压降可认为由干板压降、清液层阻力、填料层压降和克服液体表面张力的压降四部分组成，所建立的压降计算模型，能较好地预测复合塔板的压降，计算值与实验值误差在±20％以内，可用于工程设计。

Gradually turned into two feet to walk upright, hand, foot and division of labor, will use stones, sticks and other natural tools; body structure compared with Dryopithecus progress, dental arch into the arch, the teeth arranged more closely, canines are not prominent, molar greater occlusal surface, the dolphin's back back, stands about 1 meter, the brain is about 300 milliliters; mainly eat plants, and carnivorous.

逐渐变为两足直立行走，手足分工，会使用石块、木棒等天然工具；身体结构较森林古猿进步，齿弓成弧形，牙齿排列较紧密，犬齿不突出，臼齿有较大咬合面，吻部向后退缩，身高约1米多，脑量约300毫升；主要以植物为食，兼食肉类。

This invention discloses a preparation method for anti-corrosion rare earth magnet material characterizing that it takes the optimized grain-boundary phase design as the starting point on the basis of a dual alloy method to select Nd base alloy with high crystal forming ability as the assist alloy and reduces the temperature of the press mold blank in a quartz container to room temperature from over grain-boundary phase melting point with the water extraction way to get enough cooling rate and guarantee the non-grain-boundary phase, compared with the material of the same composition prepared by ordinary method, the weightlessness of this invented material reduces over 30% after testing the weightlessness of the material by laying it for 96 hours under 121deg.C, 2 atmosphere and 100% humid environment to show the advanced performance of anti-corrosion.

本发明公开了一种耐腐蚀稀土永磁材料的制备方法，其特征是它在双合金法制备工艺的基础上，以优化晶界相设计为出发点，选取具有较高非晶形成能力的Nd基合金为辅合金，并在烧结回火时将置于耐高温石英容器中的压型坯件，从晶界相熔点以上以水淬冷却的方式降温至室温，以达到足够的冷却速率，确保得到非晶晶界相，根据本发明制得的耐腐蚀稀土永磁材料，通过测量在121℃、2个大气压以及100％湿度环境下放置96小时后材料的失重情况，结果显示本发明得到的材料与常规方法制备的相同成分的稀土永磁材料相比失重减少了30％以上，充分证明其具备了更优越的耐腐蚀性能。可广泛应用于电子、汽车、计算机、电力、机械、能源、环保、国防、医疗器械等领域。

The smaller the polarity of molecules is, the larger y is. Compared with the single thin-layer cell, the dual thin-layer flow through cell has a higher collection efficiency and transfer efficiency.

与单薄层流动电解池相比，双薄层流动电解池具有较高的收集效率和转移效率。

Compared with the traditional discrete wavelet transform, the dual tree complex wavelet transform has the properties of approximate shift invariance and more directionality. These properties are good for tracing, locating and preserving image features.

与常用的离散小波变换相比，该方法具有逼近的平移不变性和更多的方向选择性，有利于特征的跟踪、定位和保留。

The contourlet transform used in the system was constructed by dual tree complex wavelet transform followed by critically subsampled directional filter banks, sub-bands energy and standard deviations were cascaded to form feature vectors, and the similarity metric was Canberra distance. The performance of retrieval system was compared including original contourlet transform, non-subsampled contourlet transform, semi-subsampled contourlet transform and CCT under the same system structure.

该系统采用的复数轮廓波变换由双树复小波变换级联临界下采样方向滤波器构成，特征向量采用子带系数的能量和标准偏差连接而成，以Canberra距离为相似度度量标准；比较了基于同样架构的基本轮廓波变换、无下采样轮廓波变换、半下采样轮廓波变换和CCT纹理检索系统的性能。

The percentage of lesions achieving repigmentation of 75% or greater was significantly higher in the dual therapy group compared with the monotherapy group 70% vs.

双重治疗组达到75%以上再色素化的病灶比例比雷射单独治疗多（70%相较於20%，P＜。001）。

Compared to where technology in espresso is going today - individual group-cap boilers for each group, dual boiler, dual PID, heat exchanger pre-heating the brew boiler water and mix-valve fine tuning individual on the fly grouphead temperature controls - the heat exchange boiler/brew system is possibly at the limit of its capabilities and risks being left behind by these newer technologies.

对比今天意式浓缩咖啡机技术的发展-独立冲泡锅炉系统对于每个冲煮头，双锅炉，双锅炉PID，热交换冲煮之前的预热水和混合阀微调在不同的冲煮头上进行温度控制-热交换锅炉/冲煮系统是在处理他们能力受到限制或者是减低风险的时候留下了这个继续解决的新技术。

We compared this two model and found that the two model is coincident when dual relation was symmetric.

接着我们又用前继邻域代替等价类建立了另一个准一般关系下模糊粗糙集模型，并把两种模型进行比较，指出当二元关系满足对称性时两种模型是一致的。

And extended codes of quadratic residue codes over Z〓(Definition 3. 4) also are discussed, which have good dual properties (Theorem 3. 9 and Theorem 3. 10). At last, two kinds of Gray map from Z〓 to Z〓 are defined (Definition 3. 5 and Definition 3. 6), and they are compared with each other, and we find the second Gray map is better than first by an example.

最后，以两种方式定义从Z〓到Z〓的Gray映射并相应的有两种码字的Lee重量定义（定义3.5与定义3.6），并以一实例计算比较了这两种Lee重量定义，指出第二种方式定义的Gray映射更好，因为其相应的Lee重量定义使得相应所得到的最小Lee重量更大。

You can buy sweetened beverages, if that suits you.

你若喜欢的话，可以买些含有糖精的混合饮料。

As many of you are probably aware, Nick and Vanessa were recently faced with an embarrasing sex scandal after naked pictures of the two getting jiggy with it in a hot tub surfaced the net.

正如很多你可能知道，尼克和 Vanessa 最近面临一个尴尬的绯闻事件后，赤裸裸的图片两个越来越jiggy与它在浴缸中的一个热点浮现净。