There are two key elements in this system, a non-parametric sampling method and a flexible sketch model.

在系统中有两个关键技术，即非参数化采样方法和灵活的线条画模板。

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So, the key techniques for development of MOA domestics are correlation standards, making and test of elements for DC MOA, and the measurement of non-uniform current between multi-column arresters.

而相关标准及导则的制订，直流金属氧化物电阻片的制造与检验，多柱（或只）避雷器的电流分布测量是其国产化的关键。

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Services such as identification and authentication, authority and access control, non-deniability, confidentiality and integrity are the key elements for the security of the information system.

为实现信息系统的安全目标，需要系统能够提供相关的安全服务：身份标识与认证服务、授权与访问控制服务、非否认服务、机密性服务、完整性服务。

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