盲的

Four double-blind trials have reported that continuous use of feverfew leads to a reduction in the severity, duration, and frequency of migraine headaches, 60 61 62 63 although one double-blind trial found feverfew to be ineffective.

64在偏头痛的长期预防最常用的草药菲沃菲。59四双盲试验报告说，菲沃菲连续使用导致的严重程度，持续时间减少，以及，偏头痛的频率60 61 62 63虽然一个双盲试验发现小白菊是无效的。64

Although they looks like eels, hagfish are a fish -- really slimy ones. When captured and held by the tail, they escape by secreting slime, which turns into a thick and sticky gel when mixed with water.

尽管盲鳗看起来很像鳗鱼，但是它要比鳗鱼更加狡猾，当它被捕获的时候，它身体的粘液就会同水混合变成厚厚的、非常黏滑的凝胶，使其得以逃脱掉，尤其值得一提的是盲鳗进食方式很可怕，它通过啃咬的方式进入动物尸体中进食，甚至可以在尸体中呆3天之久。

The main work of this thesis includes three aspects:(1) study the existing order adjustment methods and examine the characteristics of speeches, a new order adjustment method based on energy correlation is proposed. It is applied to JADE, KM, c-FastICA, and CMN to separate the convolutive mixtures from simulated and actual speeches, the results of analysis and comparison of separation performance verify the validity of the method.

针对卷积混合语音盲分离的频域算法，本文主要做了以下三方面工作：(1)研究了现有调序方法和语音信号的特性，提出了一种基于能量相关的调序方法，并应用JADE、KM、c-FastICA和CMN等四种复数BSS算法，对仿真和实际语音信号进行了盲分离，分析比较了分离性能，验证了本文调序方法的有效性。

We deduce an BSS algorithm for time-delay mixture model and an algorithm for the convolutive mixture model under the principal of Maximum Output Entropy, separately. We also provide a comparison between the two separating structures of the convolutive mixture model.

我们在最大输出熵的原则下，分别推导得出了一种时延混合模型的盲分离算法和卷积混合模型的盲分离算法，而且给出了对于卷积混合模型的两种分离结构及两者之间的优缺点。

Based on the derived frequency representation of each frame for convolutive mixtures, a modified discrete Fourier transform is proposed for the frequency domain convolutive blind separation. MDFT serves as an optimal transform in the minimum square error sense to replace the traditional DFT.

针对频域卷积混合盲分离，依据所导出的卷积混合信号每帧的频域表示模型，提出了一种最小均方误差意义下的最优变换－修正离散傅里叶变换，用于代替频域卷积混合盲分离中常用的离散傅里叶变换。

Secondly, resorting to the relative gradient, it is shown that the natural gradient learning algorithm for overdetermined BSS has the same form as that for usual complete BSS, which is verified by simulation results.

此后，借助于相对梯度的概念，证明超定盲信号分离与通常的完备盲信号分离具有相同形式的自然梯度算法。仿真试验验证了算法的有效性。

The one tap equalizations such as MRC, EGC, ZF and Controlled equalization are investigated firstly, then the adaptive MMSE equalization and a hybrid blind equalization algorithm adapted to MPSK are applied in MC-CDMA, the cost function ensure the received signal is the unbias estimation of transmitted signal.

我们讨论了自适应MMSE均衡的实现，并提出了一种适用于MPSK的混合盲均衡算法，这种盲均衡的代价函数保证接收信号是发送信号的无偏估计，因此其性能较好。

Under the care of Suzhou government and education bureau, with the great support from all lines of society and all 41 faculty, the Deaf-dumb department with 9 classes and 85 deaf-dumb students has formed the educational system covering pre-school education, nine-year compulsory education and vocational high school education .

在市政府和教育局的悉心关怀下，在社会各界的大力支持下，学校聋部形成了学前教育——九年义务教育——职业高中教育的教育体系，现有9个教学班，85名聋生；盲部形成了九年义务教育的教育体系，现有4个教学班，31名盲生。

Analysis of Zheng et al's blind signature based on bilinear parings shows that it doesn't satisfy blindness.The improved scheme overcomes the disadvantage of it and also retains the merits of the original blind signature scheme based on bilinear parings.

分析郑卓等人的基于双线性对盲签名方案后发现其也不具有盲性，改进后的方案在保留原方案优点的同时克服了原方案的安全隐患。

Based on the current ID-based signature and ID-based blind signature, a new ID-based blind signature without trusted PKG was proposed. Meanwhile, a new ID-based proxy signature without trusted PKG was also proposed.

在已有基于身份无可信中心签名的基础上结合基于身份的盲签名提出了一个基于身份无可信中心的盲签名，同时提出了一个基于身份无可信中心的代理签名。

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。