查询词典 blind

Blind rivets (stainless steel blind rivets,stainless steel rivets,open end blind rivets, blind rivets,aluminium blind rivets,aluminium rivets,peel type blind rivets, multi-grip blind rivets, color blind rivets,multi-grip rivets, semitubular rivets) and non-standard parts.

抽芯铆钉系列(不锈钢抽芯铆钉，不锈钢铆钉，开口型抽芯铆钉，拉铆钉，铝拉钉，铝铆钉，拉花铆钉，多鼓型抽芯铆钉，彩色铆钉，多鼓型铆钉，半空芯铆钉)及相关的非标准件等

Such as Open-type/ Sealed-type Blind Rivet, Stainless steel Blind Rivet, Steel-made Blind Rivet, Multi-grip Blind Rivet, Peel type Blind Rivet, Large flange Blind Rivet, Colors Blind Rivet and the so on.

如开放式/密封型盲铆钉，不锈钢铆钉盲、钢铁制盲铆钉，多握盲铆钉、果皮类盲铆钉，大型法兰盲铆钉、盲铆钉和颜色等。

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。

Not a blind Persian blinds ride blind strike me blind the blind leading the blind blind to v.

就叫我不得好死瞎子给瞎子引路；外行指导外行；问道于盲看不见。。。；对。。。

Solar film shades - Window film blind, sun control blind, solar film blind, roller blind, vertical blind, protects against fading, protect eyes and skin, glare reduction, One way vision mesh, Daytime privacy.

防晒膜窗帘–防晒隔热窗帘、防晒卷帘、防晒垂直帘、隔热卷帘、隔热垂直帘、遮光帘、遮光布帘、遮光麻草布帘、遮光柔丽丝布帘、隔热帘、太阳帘、遮阳帘。

From this case, in the assessment, the data of several different time intervals are taken and corresponding confidence levels given, and, employing blind values to express monitoring data and perambulating inspection results, the process method of blind information is applied to the practice of comprehesive assessment. With the observation items in Xiaolangdi Project, the influence factors determing the assessment result are described in the form of blind data. The data are processed according to the blind data algorithms and some scientific and reasonable assessment results are acqired, and the process method overcomes the defect of traditional numerical model, viz., too definitive description of information.

基於此，在综合评判中选取多个不同时间段的数据并赋以相应的可信度，利用盲数表达监测数据和巡视检查结果，将盲信息的数学处理运用到土石坝安全综合评判的工程实例中，并运用盲数运算法则进行盲数处理的探讨，得到了有一定参考价值的评判结果，并克服了传统的数学模型信息描述过於绝对化的问题。

It is reported that since 2002, Chengdu Experimental Primary School students in high-tech self-invented more than 150, including more than 10 pieces of specially designed equipment for the blind, such as the blind phone, the blind elevator button, the blind, such as floor signage.

据悉，2002年以来，成都高新实验小学学生的自主发明超过150件，其中包括十多件专为盲人设计的用具，如盲人手机、盲人电梯按钮、盲人楼层指示标志等。

I have just read in the paper that three elderly people , sharing an apartment and all confined to wheelchairs because of cerebral palsy , were robbed by intruders . Three Mexican tourists who could no English were charged $ 167 for a taxi ride from Kennedy International Airport to downtown New York . The 217 blind newsdealers of New York recently complained that their customers are stealing coins from their trays , shortchanging them ,and frequently mugging them on their way home at night . A savings bank guard who assisted blind customers with their deposit and withdrawal slips was recently charged with forgery and grand larceny after a blind depositor discovered her balance was $ 169 instead of the $ 2857 which her Braille accounting indicated should be there . During last year's Central Park Bicycle Race , five of the racers were attacked and had their bikes stolen while the race was in progress . This is something of a handicap in a bicycle race .

以下是我刚刚从报纸上读到的：有三位上了年纪的老人，他们住在同一间公寓里，因为患有脑瘫，他们都不得不坐在轮椅上度日，而就是这样可怜的弱者也遭到入室盗窃者的劫掠；三个不会讲英语的墨西哥游客从肯尼迪国际机场乘车到纽约市中心，司机宰客要价167美元；最近，又有217位盲眼卖报人哭诉他们的辛酸遭遇：路人们从他们的盘子里偷走硬币，顾客经常少找钱，在夜间回家时屡遭劫匪光顾；一家银行专门协助盲人顾客办理存储手续的工作人员最近被控伪造文件和欺诈，因为他的一名顾客发现自己的账目上少了一大笔钱，2857美元的存款只剩下167美元；在去年中央公园自行车赛期间，有5位参赛者遭到攻击并被人抢走自行车，这让比赛可笑的成为了"障碍赛"。

In the second part, we studied blind source separation in ill conditioned cases, obtained the sufficient and necessary conditions on solvability, and presented the neural network model and corresponding adaptive algorithm. We also discussed the blind digital source separation, established the blind separation and extration models and algorithms. These algorithms can be used to deal with high noise and ill-conditioned cases.

在第二部分，我们研究了奇异混合情形下信号盲分离问题，给出了神经网络模型及相应的自适应算法；我们也研究了数字信号盲分离问题，得到了有关可解性的充要条件，提出了分别处理低噪声问题和高噪声问题的算法，这些算法对感知信号个数少于源信号个数等病态问题也适用。

A blind man was out walking with his Seeing Eye dog when suddenly the animal paused and wet the blind man's leg.Bending down,the blind man stretched out his hand and patted the dog's head.

一个盲人牵着他的导盲狗在路上走，突然，那条狗停下来撒尿，把盲人的腿尿湿了，那盲人弯下腰，伸手去拍那条狗的脑袋。

Objective To study the effect of chitosan in the prevention of fibrous scar formation in the epidural space after laminectomy.

目的 观察选择性脊神经后根切除术椎板切除后硬膜外几种防瘢痕粘连物质的作用并探讨其机制。

On his way to the lift, he looked back to us or was it me his eyes pointing?

当他要进电梯时，他回头看我们（或者说是我，他的眼光？