查询词典 blind bend

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 invention orginates from the fact that most of the concrete reinforcement loops needed in practice can be divided up into relatively small number of types of loops which are characterized by a predetermined sequence of points of bend with a fixed sense of direction and amount of the angle of bend, in which case the loops of the same type differ from one another only in the lengths of the individual sides of the loops between the points of bend, or from one end of the loop to the first point of bend, and from the other end of the loop to the last point of bend.

问题补充：不要软件翻译的，最好自己翻译，起码通顺的这项发明orginates的是钢筋混凝土的循环需要在实践中最可分为相对的，是由弯曲点的序列特征与预定的方向和角度的数额固定感循环类型的为数甚少的事实弯曲，在这种情况下，同类型的循环，从彼此的不同只是在弯道之间，或从一个循环结束第一点弯曲点的循环个人边长，从另一端循环的最后一点弯曲。

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。。。

Furthermore, loss and crosstalk characteristics of bend intersections formed by sine bend, cosine bend and arc bend are compared.

在此基础上，对由正弦弯曲、余弦弯曲以及圆弧弯曲三种弯曲波导构成的SOI交叉波导的损耗及串扰特性进行了分析比较。

Iron bars will bend and break , bend and break, bend and break. Iron bars will bend and break, my fair lady.

铁栏会弯曲和折断，弯曲和折断，弯曲和折断，铁栏会弯曲和折断，我美丽的淑女。

Iron bars will bend and break ,bend and break ,bend and break , iron bars will bend and break,my fair lady. hear is a place that I have fun ,I have fun ,I have fun , hear is a place that I have fun ,my fair lady.

铁栏杆会弯曲和断裂，弯曲和断裂，弯曲和断裂，铁栏杆会弯曲和断裂，我的小女孩，这地方真好玩儿，真好玩儿，真好玩儿，这地方真好玩儿，我的小女孩。

Iron bars will bend and break,bend and break,bend and break,Iron bars will bend and break,my fair lady.

铁条也会弯折，会弯折，会弯折，铁条也会弯折，我的小姐。

Iron bars will bend and break , bend and break, bend and break. Iron bars will bend and break, my fair lady.

铁栏会变弯曲，变弯曲，变弯曲，铁栏会变弯曲，我美丽的淑女。

More direct, directer ; most direct, directest

径直的，笔直的

Do you know how to use a chain saw?

你知道如何使用链锯吗？