离散的

At low bit rates,the Block Discrete Cosine Transform compression methods often give rise to blocking artifacts.

低比特率时，基于块离散余弦变换的图像压缩方法常常会引起块效应。

Besides the DFRNT, random block selection and high amplitude selection is employed to improve the robustness.

除了离散分数随机变换，我们利用随机分块选择和高振幅选择来提高算法的鲁棒性。

Using pattern recognition, we can obtain the slowness, amplitude andprimary frequency of compressional, shear and Stonely waves respectively, andthen calculate the available geological parameters.

我们根据各波型到达时间、相位、振幅和频率四方面的差异进行模式识别，在离散化输入条件下从长源距全波波形图上分离提取了纵波。横波和斯通利波的时差、振幅和主频，进而计算出各有关地质参数。

Influences of the electron-beam velocity spread, the period and depth of the helical corrugations on the efficiency are studied.

在此基础上，对电子束速度离散、螺旋开槽周期和开槽深度对效率的影响，进行了非线性模拟研究。

By using Wavelet Transform and the Discrete Cosine Transform,the effective feature extractions of different characters are got.

利用小波变换和离散余弦变换，提取不同字符的有效特征。

A new generation of geostationary JPEG2000 image compression standard of discrete wavelet transform as its core technology transformation.

详细说明：用VC写的一个小波正反变换。新一代静止图像压缩标准JPEG2000将离散小波变换作为其核心变换技术。

Categories more relevant to the metric structure can be found by limiting the morphisms to

就是说，在拓扑空间和连续映射范畴中，或在一致空间和一致连续映射范畴内，离散空间''X''是集合''X''上的

A semi-adaptive triangulation of parametrically defined surface is presented.

文摘：提出了一种参数曲面的拟自适应三角化离散算法。

The mesh generated by reverse engineering or simple tessellations of solid models usually cannot be directly applied to analysis due to bad quality. An iterative optimization algorithm is proposed.

从逆向工程或者简单离散实体模型得到的网格质量较差，通常不能直接用于有限元分析，为此提出一种迭代优化算法。

This paper discusses on watermarking algorithm based on DWT.

提出一种离散小波变换域的水印算法。

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。