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In this chapter, three kinds of target recognition methods are performed, which are:①Target recognition method based on the description of polarization parameter plane. The echo polarization states of target are projected onto the polarization state plane described by the ellipticity ε and the tilt angle τ of the polarization ellipse, the change of parameter following ferquency becomes the chart. According to the changing trait of the chart, the multidimensional polarization feature space of target has been contructed. Furthermore, a series of polarization feature parameters used in designing the structure of target recognition device are extracted, and they are insensible to the posture of target.②Target recognition method based on the description of Poincare polarization sphere. The echo polarization states of target expressed by Stokes vector are projected onto the Poincare polarization sphere. The conception of polarization ferquency stability, which is used in describing the dynamic distribution characteristics of the target echo polarization states on Poincare polarization sphere, has been defined. A group of polarization feature parameters used in designing the structure of target recognition device are extracted, and they are insensible to the posture of target.③Target recognition method based on the description of frequency sensitivity. In accordance with the conception of the polarization state distance defined on Poincare polarization sphere, the frequency sensibility of the physical structure property of target has been investigated, the frequency distribution feature curves in PSD domain are obtained, and targets'features are extracted by means of the curve-fitting method with Least Square Criterion.

这章具体研究了基于三种极化散射特性描述的相应的目标识别方法：①基于极化参数平面描述的目标识别方法，将目标回波极化状态投影到以极化椭圆参数，即椭圆率角ε和倾角τ表征的极化状态平面上，参数随观测频率的变化就形成了图，根据图的变化特点构造了目标的多维极化特征空间，并提取了不敏感目标姿态变化的极化特征参数组来设计目标的识别器结构；②基于Poincare极化球面描述的目标识别方法，采用Stokes矢量表征目标回波的极化状态，并将其投影到描述极化状态的Poincare极化球面上，定义了极化频率稳定度的概念用以刻画目标回波极化状态在Poincare极化球面上的动态分布信息，提取了准方位不变性的目标极化特征，最后设计了目标的识别器结构；③基于频率敏感性描述的目标识别方法，通过在Poincare极化球面上所定义的极化状态距离的概念，研究的是复杂目标物理结构特性对探测信号频率的敏感程度问题，获得了在极化状态距离下的频率分布特性曲线，采用最小二乘估计曲线拟合方法，它既用于极化特征的降维，同时又直接将拟合参数作为目标的分类特征。

Faria has dreamed this; the Cardinal Spada buried no treasure here; perhaps he never came here, or if he did, Caesar Borgia, the intrepid adventurer, the stealthy and indefatigable plunderer, has followed him, discovered his traces, pursued them as I have done, raised the stone, and descending before me, has left me nothing.

即使他来过，凯撒布琪亚，那个大胆的冒险家，那个不知疲倦，心狠手辣的强盗，一定也曾跟踪来过这里，发现了他的踪迹，象我一样循着这些记号来到了这里，也象我一样的撬起了这块石头，然后跑下洞去，他在我之前就已来过了，所以什么也没留给我了。

Professor Kuang has been working in nanostructured materials and dye-sensitized solar cells. He has published a series of good papers in nanomaterials, mesoporous materials and dye-sensitized solar cells. Professor Kuang has been worked with Professor Graetzel, who is the inventor of dye-sensitizedsolar cell, for more than three years as a postdoctorate.

匡老师一直从事功能性纳米材料及染料敏化太阳电池的研究，在纳米材料、中孔材料、染料敏化太阳电池方面发表了一系列高水平的文章，曾在染料敏化太阳电池创始人Graetzle教授研究有过3年多的博士后研究经历。

The fluid mixture process has been studied under power-free driven technology through designs of chip structure and numerical analysis. Then the fluidity, fluid velocity and reaction sufficiency of immunoreaction has been studied based on this chip platform. The results have been validated and the sensitivity has been effectively improved.

通过芯片结构设计和数值分析，研究了在无动力气压驱动方式下的液体混合，在此基础上对芯片平台上的免疫反应的流动性、流速控制和反应充分性进行研究，设计实验对结果进行验证，有效提高了检测的灵敏性。

Home loans and real estate construction industry has been apparent precursory cooling, which shows that the United States has begun to cool down the real estate industry, growth has been the maximum.

在提高利率，美国住房贷款和房地产建筑业前兆已明显降温，这表明美国已开始降温，房地产行业的增长一直是最大的。

Since 1999, the Russian economy has witnessed a rapid growth. However, the Russian government did not take advantage of this favorable opportunity to carry out industrial restructuring, but rather adopting a "passive adaptation" policy, which results in Russia's dual industrial structure today. On the one hand, Russia's total industrial structure has undergone positive changes, not only there has been preprimary adjustment in the relationship between the three industries, but there is a high-level trend in the industrial structure; on the other hand, the internal structure of Russian industry seems to become more unreasonable, even somewhat backwards.

在1999年以来俄罗斯经济的迅速攀升中，俄政府没有利用这一有利时机进行产业结构调整，而是采取"消极适应"的政策，于是出现了今天俄罗斯产业结构的双元现象：一方面，俄罗斯总的产业结构发生了积极的变化，不仅三次产业的关系得到了初步的调整，而且产业结构出现了走向高级化的趋势；另一方面，俄罗斯各产业内部的结构愈发不合理，甚至呈现倒退的态势。

The company since its establishment, has been committed to high-speed impact of forming technology and high-speed cutting technology development and research, has developed a series of high-speed multi-forming powder Press and high-speed cutting machine, and gradually put to the Market, has favored customers.

公司自成立至今，一直致力于高速冲击成形技术和高速切割技术领域的开发和研究，现已开发出多种系列的高速粉末成形压机和高速切割机，并逐步投放到了市场，备受用户青睐。

Fentimans has been able to shrug off much of the publicity around the story, and has even seen an increase in inquiries from consumers as a result, but Pret a Manger's PR has not been so good.

Fentimans已经能够摆脱大部分周围的故事，宣传，甚至出现在消费者调查结果增加，但该集团一经理的公关并没有那么好。

The regulation machinery has the very important position in the national dividend, it has substituted for primitively, backwardness production tool to a great extent, it has lasting achievements in the nowadays China and the world swift development's today.

英语翻译在线翻译工程机械在国民生产中有着很重要的位置，它在很大程度上取代了原始的、落后的生产工具，它在现今中国和全世界的飞速发展的今天功不可没。

However, the pseudo-triaxial strengths of several rocks from the best fitting solutions have great scatterness from the real magnitudes. Also, it does not correspond to the experimental results that rock has the same strength under conventional triaxial compression and tension; the maximum increase of strength from intermediate principal stress has a linear relation with the minor principal stress; and the first-order derivative of strength has an interruption at the peak point.

此外，统一强度理论认为岩石三轴伸长强度与常规三轴压缩强度相同，在最小主应力恒定时中间主应力引起的强度最大增加值随最小主应力线性增加，且强度关于中间主应力的一阶导数在峰值点是不连续的，这些都与试验结果不能完全协调。

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。