查询词典 digital coding

Also,it can overcome frequency aliasing effect in general subband coding,and is more flexible than the resolution-layered coding which uses temporal subsampling and spacial filter.

另外，它比采用时间方向亚抽样和空间滤波器的分辨率分层方法更灵活，并克服了频率混叠现象。

In order to solving the packet loss error in network realtime image and video transmission, an efficient balanced multiple description wavelet image robust coding algorithm is proposed, which is based on embedded zeroblock coding and spatial equably subsampling polyphase transform.

针对网络图象和视频传输中不可避免的丢包错误，本文提出基于嵌入式零块压缩编码和空间均匀采样的相位变换的均衡小波图象多表达容错压缩方法——即基于零块编码的多表达小波图象容错编码方法。

On this basis, by means of analyzing hierarchical relations among power system resources, the coding objects are divided into enumeration type, hierarchical relationship type and topological relation type, then coding rules are defined for different types of objects.

在此基础上，通过分析电力系统资源之间的层次关系，将编码对象分为枚举型、层次关系型和拓扑关系型，然后对不同的对象类型进行编码规则定义。

The green bus coding employs more energy reduction by a joint triplication bus power model for crosstalk avoidance. In addition, the circuitry of green bus coding is more simple and effective.

节能汇流排编码建立在三重汇流排模型上可以有效避免导线互相干扰，另外实现此编码方法的电路也较简单且有效。

In order to improve the reliable transmission efficiency, Ahlswede et al. introduced the network coding theory. Network coding can not only increase network throughput, but also advance in data universalness, robustness, reliability and security.

为了实现更高的传输效率，Ahlswede等人提出采用网络编码的方法，不但可以提高网络吞吐量，而且在普适性、鲁棒性、可靠性和安全性等方面都具有优势。

AVS is a new audio and video coding standard in China,in which variable block sizes and quarter-pel motion compensation have been applied to improve coding efficiency.

AVS是我国自主制定，拥有自主知识产权的音视频编码技术标准。AVS采用了可变大小块以及1/4像素精度的运动估计技术以提高编码效率。

Methods: The coding region of superoxide dismutase was amplified using PCR method from the E.co1i genome. The PCR product was cloned into PUC19-T vector and sequenced. In addition, the cloned coding region of Mn-SOD was inserted into the expression vector PET-28a to form the recombinant plasmid PET-28a-Mn-SOD and was then transformed into E.coli BL21 for expression.

用PCR方法从大肠杆菌2号基因组中扩增Mn-SOD基因编码区，克隆到pUCm-T Vector，测定核苷酸序列；再将基因编码区克隆到原核表达载体PET-28a，构建含Mn-SOD基因的重组表达质粒，转化到大肠杆菌BL21中进行IPTG诱导表达。

objective: to achieve the soluble expression of mn-sod gene in e.coli and assay the enzyme activity of the expressed product. methods: the coding region of superoxide dismutase was amplified using pcr method from the e.coli genome. the pcr product was cloned into puc19-t vector and sequenced.in addition,the cloned coding region of mn-sod was inserted into the expression vector pet-28a to form the recombinant plasmid pet-28a-mn-sod and was then transformed into e.coli bl21 for expression.

超氧化物歧化酶(superoxide dismutase，sod)是细胞体内歧化超氧阴离子自由基(o-2)的一个抗氧化酶，按其结合的金属性离子根据其中金属辅基的不同可分为4类：cu/zn-sod、mn-sod、fe-sod和ni-sod，它们通过催化超氧阴离子自由基0-2发生歧化反应，达到清除o-2的效果，具有防御氧毒性、增强机体抗辐射损伤能力、防衰老以及治疗某些肿瘤、炎症、自身免疫疾病等功效，广受国内外科研工作者的关注和重视[1]。

Pyramidal lattice vector quantization has drawn extensive attention by its promising property recently. The coding method based on zerotree coding［1］ has made a great coup during the last few years.

近年来，金字塔格型矢量量化方法由于其本身的特点和性质引起了人们的广泛兴趣，而文献［1］介绍的基于零树的编码也获得了极大的成功。

The basic principles and main techniques of image data compression are presented in this article. The zerotree coding method and zero filling of rectangular block coding method are compared.

本文首先介绍图像数据压缩的基本原理和几种常见的图像压缩编码方法，比较了零树编码方法和矩形块填充编码方法的优缺点。

Fostering the concept of multi-culture firmly and mastering the development of advanced culture correctly are conductive to resisting terrorism, separatism of nationalities and ultraism of religion, which is of great academic theoretical, immediate and profound historical si...

牢固树立多元文化的理念和正确把握先进文化的发展方向，有助于在世界范围内自觉地抵制恐怖主义，民族分裂主义和宗教极端主义。不仅具有重大的学术理论意义，而且也具有重大的现实意义和深远的历史意义。

But if anyone walks in the night, he stumbles, because the light is not in him.

11：10 若在黑夜行走，就必碰跌，因为那光不在他里面。