This paper briefly introduces the status of the severe accident research work, and proposes some suggestions for the future implementation of severe accident management program.
本文简要介绍了目前对严重事故的研究状况，并对今后严重事故管理工作提出了建议。
In this paper, connected with centrifugal impeller design, authors proposes some theory problems to he investigated in CAD research of subsonic centrifugal impellers.
结合设计实践，提出了亚声速离心叶轮CAD研究中应重点解决的若干理论问题。
In the research of simplifying PKI system, this paper proposes an improved PKI system based on the combine of the IBE and the one-way hash chain.
在简化pki系统的研究中，本文首先介绍基于身份的加密算法，然后结合单向哈希链，提出一种基于IBE的改进PKI系统。
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