查询词典 DWT

As an illustrative example, the evaluation of midship section structure for 10000~40000 dwt bulk carriers in terms of seven performance indices and their satisfaction degrees is carried out.

显见，船舶结构评估是一类所谓结构非分析的问题，不可能建立其精确的数学模型而求解，因此，应用智能分析设计的原理和方法加以处置是适宜的。

The paper introduces an unadaptive digital watermarking algorithm based on DWT that is realized it on matlab. Both the validity and the attack resistance of the algorithm are tested in the paper.

介绍一种基于离散小波变换的非自适应数字水印算法，并应用MATLAB数学软件实现算法，考察算法的有效性和抗攻击能力。

Here, a discrete wavelet transform is employed to extract unlearnable dynamics. While learnable dynamics is handled by ILC, unlearnable dynamics is regulated by feedback control. It will let ILC become more robust.

因此，在此将辅以离散小波转换(Discrete Wavelet Transform， DWT)以分离不可学习之成分，可学习之部分由学习控制处理，而不可学习之部分则以回授控制压抑之，使反覆学习控制更具强健性。

A covered-type of sheet-piled structure has recently been proposed to overcome the problem that the conventional sheet-piled structure is only applicable in medium and small wharfs,which has long been the difficult problem of port engineering.

针对传统板桩结构仅适用于中小码头建设这一长期困扰工程界的难题，结合京唐港待建1.0×105 DWT级深水泊位拟采用的遮帘式板桩结构，运用离心模型试验技术对其结构受力状态和变形特点展开研究。

With the main dimensions and main engine power of the ship unchanged, economy comparisons between a ship with high block coefficient and a 20 000 dwt bul...

初步论证表明，大方形系数船型具有良好的经济性，是一种值得进一步开发的经济船型。

In addition to JTB series Roots blower, our company also produces and sales low-noise DT tank centrifugal fan, T35/BT35, T30 axial fans, CF more airfoil centrifugal fan and axle roof ventilator.

我公司除生产销售JTB系列罗茨风机外，同时还生产销售DT低噪声柜式离心风机、T35/BT35、T30轴流风机、CF多翼型离心通风机及DWT型轴流式屋顶通风机等。

It includes the main propulsion plant, management of power station , ship control system,remote control of valves and measurement of tank level,cargo oil pump controlled by converter,heating monitoring of cargo oil tanks and reclaim monitoring of poisonous vapour.

结合19 000 dwt化学品/成品油船的设计，从系统基本原理及构成上，简要介绍了主推进装置、电站管理、船舶控制系统、阀门遥控与液位测量、变频货油泵、液货舱加热和有毒液货蒸汽回收等方面的自动化设计，探讨了此类船型的自动化系统特点及发展方向。

The characteristics of human visual system is used to embed the watermarks which is encrypted into mid-frequency subbands coefficients of Y branch of host image after Y branch of host image is transformed by the multilevel structures wavelet transform in the YIQ pattern space.

该算法利用形式简单的二维离散超混沌系统产生的超混沌序列生成密码对水印图像加密，同时根据人类视觉系统的特性，对宿主图像在YIQ色彩空间中的Y分量进行多级离散小波变换后，将加密后的水印图像嵌入到宿主图像Y分量的DWT中频子带中。

The quantizer can perform dynamic quantization for wavelet coefficients after the determination of the best quantization steps {qi} that minimize the average mean square error at a given bit rate.

在为DWT 系数确定好一组使给定码率下均方误差最小化的最佳量化步长{qi}后，该量化器将能够实现小波系数的动态量化。

This method can not only detect the presence of hidden message but also identify the hiding domains.

该方法不仅仅能较准确地识别出是否隐藏了信息，还能识别出信息隐藏的隐藏域，即DWT域、DCT域，或者空域。

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。