lwt

Gray Image Watermarking Algorithm Based on LWT and SVD

基于提升小波变换和奇异值分解的灰度图像水印算法

Experimental Study on Cooling Ceiling Air-conditioning System Covered and Airproofed with the Film Whose Long Wave Transmittance ( LWT ) is High

加装长波高透过性薄膜的冷却顶板空调系统的实验研究

When the total quantity of added metal catalyst was more than lwt % , it was not helpful to improve the hydrogen storage density .

各金属催化剂添加总量超过1wt%时，不利于储氢密度的提高。

The percentage of crude protein content of Common 1 , LWD 8115 and LWT 8140 was more than 23.52 % .

平均粗蛋白含量在16.05%~24.56%之间，品种间有极显著差异（P<0.01），其中品种Common1、LWD8115、LWT8140的粗蛋白含量达23.52%以上。

A new texture feature extraction method using Local Walsh Transform ( LWT ) is presented . The definition of LWT is given . The statistical properties of LWT coefficients are analyzed .

介绍了一种利用局部沃尔什变换（LWT）提取图像纹理特征的新方法，给出LWT的定义，并分析了LWT系数的统计特性及其各阶矩的纹理鉴别性能。

The water-gas shift experiments showed that the pure CeO2 nanofibers had no catalytic conversion and the lwt % Pt doped CeO2 nanofibers had better catalytic effect which indicated that the Pt dispersed well in the nanofibers with high activity .

水煤气转化实验表明纯CeO2纳米纤维没有催化转化效果，负载1wt%Pt的CeO2纳米结构纤维具有较好的催化转化效果，说明了Pt在Pt/CeO2纳米纤维中均匀分散并具有较高的活性。

In terms of acoustic parameters , with the CNTs content increasing , the density , elastic ratio and loss factor of composite diaphragm were climbing up . When the CNTs content reached to lwt % , however , the upward tendency leveled off .

振膜声学参数方面，随着碳纳米管含量的增加，复合振膜的密度、动态弹性模量、比弹性率以及损耗因子均上升，但是当碳纳米管浓度达到1wt%之后，上升的趋势趋于平缓。