不复杂的

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。

You will understand what I mean by COMPLEXITYby noting these three aspects. Firstly, it refers tothe complexity in form. When CAD becameinvolved in the design process Architect's wereenabled with a higher level of control over evermore complex geometry. Consequently it canand will generate infinite possibilities in the futurefor form finding, which has shifted in emphasis asa more logical design process based onsystematic theories away from intuitive designtechniques. Secondly, it illustrates our growingsocial complexity. As technologies allow peopleto send and receive more information than before,in ever shorter time frames, the function ofarchitecture and urban space will increasinglybecoming ambiguous. Emergent, adaptive andtransformable spaces are replacing limitedfunction spaces gradually. Even a single spacewould afford more potential functions. Lastly, Iam referring to the complexity of collective design team organizations working on different projects.The fact is that our social work division is moreintricate and variegated today; Architects mustby necessity negotiate with governmentalauthorities, material suppliers, engineeringconsultants, quantity surveyor, contractors,planning authorities, landscape architects, interiordesigners, acoustical engineers, et cetera besidesjust our clients. Meanwhile, projects and designteams tend now to be a globally dispersednetwork. All of these things are challenging theconventional architectural practice, it'sorganization, and administration significantly.

Complex可以从3个层面上理解：首先是指设计形式上的复杂性，即引入计算机数字化技术后，建筑师可以设计和控制更高级、更复杂的几何形体，而不是简单地发挥计算机复制、粘贴的画图优势，让计算机真正参与到设计过程中，带来更多设计形式上的可能性（需要指出的是，这种形式上的演进已经从开始的直觉行为转成由系统理论指导的理性应用）；第二，是指与社会学相关的复杂性，科技让人们更多更快地接受和传递信息，建筑和城市空间的功能性变得越来越模糊，无法预知，随时间调整自身、不断变化的空间正在不自觉地逐步取代原有功能确定的传统空间，或者说一个空间要承受比以前晰释复杂性ARTICULATING COMPLEXITY多得多的功能要求；最后，是指在一个建筑方案内团队组织的复杂性，社会分工越来越详尽，建筑师要面对的除了甲方和使用者，还有政府权力部门、材料供应商、工程技术部门、合同签约顾问、城市规划部门、景观设计师、室内设计师、音响设计师等等相关的合作单位，同时，在项目和设计职员的地域分布上更趋向全球化，这些都带给建筑事务所内部管理和组织上前所未有的复杂性。

Avoid unnecessary red tape complex pattern structure to business card printing and membership card making difficult.

避免不必要的繁琐复杂的图案结构给制卡和会员卡制作带来困难。

A Rube Goldberg machine is an unnecessarily complex and impractical device to engineered to perform a simple task.

甲鲁比戈德堡机是一个不必要的复杂和不切实际设备设计，以执行一个简单的任务。

There are differences between this kind of scherzo and its previous styles.

这些谐谑曲已不同于以往的谐谑曲体裁，不再限于嬉戏、玩闹而是隐含了深刻而复杂的思想内容。

Whether this accelerated early growth was due only to penetration of the seed coat, or was a more complex phenomenon, is still unclear.

早期的加速生长是由于种皮被穿透，还是一种更复杂的现象，至今尚不清楚。

And there are many reasons—quite apart from differing levels of nationalist self-assertion—why the picture should be so mixed.

其间的原因很多，且不说那些民族主义者自作主张程度各不相同，所以这也是形势之所以为何如此复杂的缘故了。

Just because you're conveying legal or complex technical information, doesn't mean you have to use serpentine sentences that never seem to end.

因为你的法律或复杂的技术信息传递、不是你要利用蛇纹石语句似乎永远结束。

We then took the low poly model into 3ds Max, where we set up simple bones and the controller. A complicated rig setting was unnecessary because we only wanted a fixed pose.

然后我们将低模导入到3DS MAX，我们将在这儿绑定骨骼和控制器，我们不需要建立一个复杂的控制系统，因为我们只是需要摆设一个固定的姿势。

This sounds a particularly sophisticated sociobiological argument .though that is not necessarily a compliment ,for sociobiological theories tend to disappear into gaseous vapour when you think about them for a while .

这听上去是一个极其复杂的社会生物学论点，但这样说不一定是称赞，因为社会生物学理论在人们的深思熟滤下往往会转眼化为乌有。

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。