答：版本5技术预览并不用Web服务描述语言(Web Services Description Language,WSDL)文件表达安全性需求。
Answer: the Version 5 Tech Preview does not express security requirements in the Web Services Description Language (WSDL) files.
它提供了两个不同抽象层次的描述语言以满足不同用户的需求。
This language provides two levels of abstraction to meet various user requirements.
本文针对虚拟博物馆的特点及需求，给出一个基于XML的适于描述虚拟博物馆场景的场景描述语言xvm。
After analyzing the characteristics and requirements of virtual museum, this paper introduces an XML-based scene description language for virtual museum called XVM was introduced.
采用近世代数和时序逻辑的方法定义了形式化描述语言，并形式化地描述了密码协议的分层安全需求。
Using temporal logic and algebra, a formal requirement language was presented and used to describe the formal hierarchy requirements for cryptographic protocols.
为了满足日益增长的测试需求，欧洲电信标准协会推出了新一代测试描述语言TTCN-3。
To satisfying the progressive requirements of test, the European Telecommunications Standards Institute published the next generation testing language TTCN-3.
为了满足日益增长的测试需求，欧洲电信标准协会推出了新一代测试描述语言TTCN-3。
To satisfying the progressive requirements of test, the European Telecommunications Standards Institute published the next generation testing language TTCN-3.
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