集束

During the third period (from 1937 to 1942), Li Jianwu came out with his second wonderful work "Ju Hua Second Volume". Compared with the "Ju Hua Volume","Ju Hua Second Volume" changed its length, style and character manner. The remarkable change is reflected in the choice of the critical object, and the continuation and development of literary view. The critical object was changed form "Jing Group" youth to "left wing" literature youth. The highlight of criticism not only preserved the need to the "harmoniousness" and "continency", but also further noticed the elements of "era" and "force". From such a choice full of antinomy and quandary, it is not hard to conclude a thinking logic in accord with "era" color.

第三阶段从1937年到1942年，李健吾紧接着捧出第二束奇葩--《咀华二集》，与《咀华集》相比，《咀华二集》在篇幅、文体、文字风格等方面都发生了变化，而最大的变化当属评论对象的选择以及相应的文学观的延续与发展，评论对象由前一时期的"京派"青年作家转向左翼文学青年，批评视点除继续保留对"和谐"与"节制"的要求外，进一步注意到"时代"和"力"的因素，从这一充满矛盾与困惑的选择中不难窥见出一种合乎"时代"色彩的思维逻辑。

The second phase is from 1935 to 1936. During this period, Li Jianwu contributed to his first master of piece,"Ju Hua Volume". At the same time, he usually actively took part in the literary group named as "Jing Group". Therefore, he was regarded as the chief of delegates. Basically Li Jianwu holds the literary view of "Jing Group". For instance, he emphasizes the literary consciousness and aesthetic nature; he highlights the harmoniousness of writing and continency of author's sensibility. These are also reflected in the comparison between "Flaubert Comment Biography" and "Ju Hua Volume".

第二阶段从1935年到1936年，李健吾贡献出其批评的第一束奇葩--《咀华集》，这一时期李健吾基本上活跃在"京派"文人圈子中，因而一般被视为"京派"批评的首席代表，从《福楼拜评传》和《咀华集》的对照阅读中亦可以看出李健吾基本上持有"京派"文学观，比如说强调文学的自觉与审美性，强调作品的"和谐"与作家情感的"节制"。

The main job and contribution of this paper are as follows:Based on narrowband signal processing, we propose a new method for FH signal blind detection and blind parameter estimation. Firstly, compute the cross-correlation function of FH signals from multichannels, then we get the cross power spectral density matrixCSDM Secondly, select the hops of FH signals from the CSDM via processing and analyzing the CSDM, meanwhile reduce the influence coming from noise, fixed frequency signal and other interferences; Lastly, estimating the DOA of every hop and according to the DOA, we can separate the hops, get the number of FH signals and their parameters. Propose a new method for designing the threshold in FH signal detection. This method makes it easy to get the threshold by theoretic computing and it can extremely reduce the interference of non-FH signals.Based on broadband signal processing, we propose a new method for FH signal blind detection and blind parameter estimation. Firstly, get the DOA of the signals by wideband spatial spectrum estimation; secondly, separate the signals by spatial filtering using wideband beamformer; Lastly, we propose two methods for FH signal blind detection and blind parameter estimation, one is for several constant hop-rate FH signals whose dwell-time are different and another is for a single FH signal whose hop-rate is alterable.By employing spatial interpolation in broadband signal beamforming, it can reduce the number of antenna elements and corresponding RF modules, A/D converters, etc. It can also eliminate the mutual coupling between antenna elements while getting the narrower main beamwidth and lower sidelobe level.

本文的主要研究工作和贡献如下：●提出了一种基于窄带处理的FH信号盲检测和参数盲估计的实现方法，即首先求出多路信号之间的互相关，进而得到互功率谱密度矩阵，然后通过对CSDM进行对折处理来抑制噪声、定频信号及其他干扰的影响，并将所有属于FH信号的hop(每一跳的驻留时间在时频图上持续的线段)从CSDM中筛选出来，最后用阵列信号处理中的到达方向估计理论在频域中估计出各个hop的方向参数，利用方位信息完成FH信号分离并得到FH信号的数目及其各自的参数集；●提出了一种确定FH信号检测门限的策略，该策略不仅使得检测门限能够通过理论计算得到，而且还显著地抑制了非跳频信号的干扰，从而能有效地检测出FH信号；●提出了一种基于宽带处理的短波FH信号盲检测和参数盲估计的实现方法，即首先利用宽带空间谱测向技术得到接收信号的DOA，然后采用宽带波束形成技术对特定方向进行空间滤波，实现多个信号的分离，最后分别提出了两种FH信号的盲检测和参数盲估计方法，第一种方法适用于空间某个特定方向上存在着几个驻留时间不同的恒跳速FH信号和其他干扰信号的混合信号，第二种方法适用于空间某个特定方向上仅含一个可变跳速的FH信号和噪声的混合信号；●将空间插值的概念和宽带波束形成技术结合起来，提出了一种基于频域处理的宽带恒定束宽的波束形成方法。

Unmyelinated fiber bundles consisted of the fibers with dimension less than one micron, and their terminal buttons often compacted together.

无髓纤维小束由直径1μm以下的纤维组成，其终末有时麋集在一起。

As a career in designing and producing the manufacturing equipment of electronic wire and cable, we supply many kinds of twist machine. Our main products are buncher, twist quadding machine, Rigid stranding machine, tube type stranding machine, and com-municating wire and cable stranding machine.

各类绞线，集合机皆为我们的主要产品：除了生产一般大型束绞机，行星式集机，RIGID式集合机，炮筒式绞线机外，我们更生产精密的专业电子，通讯网路线之基础绞合机，包括：供生产高效率，高品质线缆之高速倍绞型对绞机，给线捻返倍绞型星绞机及对绞机。

Inflorescence bracteate, partially iterauctant, composed of 1–7-spikeleted racemes gathered into fascicles or globose mass subtended by a tiny, membranous, 2-keeled prophyll, 0 or 1 gemmiferous bract, 2–6, gradually enlarged scaly bracts, and 2–7 spathiform bracts.

具苞片的花序，部分iterauctant，由1-7 spikeleted组成，总状花序进束簇聚集群众以极小，膜质，龙骨状的2被包着的或球状，小穗具2-7小花，顶生不育。

The total initial investment of Zibo Haitian Textile Co., Ltd. Amounted to more than RMB￥80 million together with 112 sets of steam looms imported from Japan. We have sets of advanced equipments from both home and abroad such as the joint starching and dyeing machines and ropedyeing machines.

淄博海天纺织有限公司投资8千余万元现有日本津田驹公司喷气织机112台，及浆染联合机、束状染色机等成套国内外先进设备，年产牛仔布1800万米，是集染色、织布、整理为一体，现代化，自营进出口企业。

From bright generation Liu Tian is mixed " collect asking water ", 10 thousand respectful " hoof of a bamboo fish trap of prevent floods by water control ", Pan Jixun " general view of flood-prevention work done on rivers " can see processing Huang Yunsai thinks in 3 books that treat a river from prevent floods by water control prevent or control flood, treat a river to understand use --, it is our country manages the transition period that river idea studies on Huang Shi.

从明代刘天和《问水集》、万恭《治水筌蹄》、潘季驯《河防一览》三部治河书中可以看出治理黄运思想从治水防洪、治河通运———河运合一、以河治河———筑堤束水、以水攻沙的变化，是我国治黄史上治河思想的转折时期。

Based on the factors that cause the chylothorax after esophagectomy, we selected 40 esophageal cancer patients with radical surgery and played the operation of selective low cluster thoracic duct ligation.

根据食管癌术后并发乳糜胸的原因，总结低位结扎胸导管预防食管癌术后乳糜胸的适应证，选择40例食管癌根治术患者进行选择性行低位集束结扎胸导管。

One Western diplomat says the weapons could now be used only "in extremis".

一名西方的外交官说，现在集束武器只能在&极端情况&下才能使用。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。