The halfway bus station is essential public infrastructure for transit system to achieve its service.
公交中途站是公交系统实现其服务必不可少的公共基础设施。
PKI is infrastructure provide security service, based on public key theory and technology.
PK I技术是利用公钥理论和技术建立的提供安全服务的基础设施。
Public key Infrastructure (PKI) has become the key knowledge to provide security service in Internet.
公钥基础设计PKI已经成为网络安全关键技术。
Public key Infrastructure (PKI) has become the key knowledge to provide security service in Internet.
公钥基础设计PKI已经成为网络安全关键技术。
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