不可实现的

This paper first discusses key technology of implementing electronic cash systems and two concrete schemes during development of universal e-cash systems, specially their solutions to achieve divisibility.

本文在讨论实现电子现金的关键技术，研究通用电子现金研究发展中两个重要的具体方案的基础上，设计了一个基于部分盲签名不可追踪通用电子现金系统。

To higher professional education, practical teaching has the functions of being equivalent, complementary, as it is compared with theoretic teaching. Thus it cannot be replaced by theoretic teaching because of its importance. Practical teaching is the key in fulfilling the goal of cultivating the talented, and it is also one of the important criteria in judging the quality of education and the main difference from normal higher education.

在高职教育中，实践教学不仅与理论教学具有等价性、互补性和不可替代性，其地位和作用甚至要超过理论教学，是高职教育实现人才培养目标不可或缺的环节和手段，是衡量教育质量高低的重要指标，也是区别于普通高教的主要标志。

The experimental results show that the algorithms are blind, and they have beautiful robustness, sensitivity and inaudibility.

仿真实验表明，本文的水印算法具有很好的鲁棒性、脆弱性和不可感知性，并且实现了水印的盲提取。

Other recent works highlighting cultural differences in a post-ideological world Huntington's Clash of Civilisations or Fukuyama's Trust come to mind have grasped this intransitivity, making no claims that any one complex could tend towards predominance over all others, in the way that a modal economic order can.

福山的《信任》，它们已抓住了这种不可通约性，指出任何复杂的文化都不能以实现模范经济秩序的方式凌驾于所有其他文化之上。

If N is inexactly representable, t is required to be one of the two adjacents, with an implementation-defined choice of rounding direction; that is, the conversion is required to be correctly rounded.

如果 N 是不可精确表示的，则要求 t 是两个邻值之一，舍入的方向由实现定义来选择；即要求转换是适当舍入的。

In his Capital, Marx has revealed the historical temporariness of Capitalist economic system and the gravity of unsustainable development in the process of material change between man and nature .

马克思在《资本论》中揭示了资本主义经济制度的历史暂时性及人和自然之间物质变换过程中存在着不可持续发展的严重性，并从制度变迁和观念转变两方面提出了实现可持续发展的途径。

The systems include application sub-system and cretification authority, application sub-system apply symmetric and asymmetric cryptosystem and public-key certificate which was authoticated by CA and can certify the valid user-identity to set up secure communication channel, exchange session key and provide message integrity, confidetiality, authentication and nondeniability.

系统包括证书中心和应用子系统，证书中心签发证书用来证明用户的合法身份，应用子系统应用证书和对称、非对称密码体制，识别用户合法身份，建立了安全通信通道和交换会话密钥，实现了通信数据的完整性、保密性、真实性、不可否认性。

A new method which could extract region of interest was introduced. Based on partitions of indiscernibility relations and rough approximation, ROI could be extracted automatically and precisely.

为实现空瓶检测中感兴趣区域ROI的自动精确标定，介绍了一种基于粗糙集不可分辨关系划分及粗近似进行ROI区域提取的新方法。

With the rapid development of computer communication network, people hope to implement rapid and long-distance communication by means of electronic apparatus. As a result, digital signature, which is widely used in society nowadays, comes into being and has been playing a very important role in thefields of information security, identity authentication, data integrity; nonrepudiation and anonymity, etc.

随着计算机通信网的迅速发展，人们希望通过电子设备实现快速、远距离的交流，数字签名应运而生，并已经在信息安全、身份认证、数据完整性、不可否认性和匿名性等方面发挥了重要作用。

The impermeable and tasteless barrier dependably protects bottled wine from the ingress of oxygen for pure wine-drinking enjoyment.

不可渗透而无味的阻隔涂层可靠地保护装瓶葡萄酒，防止氧气进入，实现饮用葡萄酒的真正享受。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。