论文部分内容阅读
Sadaf公司计划在Al-Jubail建第3套苯乙烯装置
【出 处】
：
石油化工
【发表日期】
：
2004年3期
其他文献
Attribute-based encryption(ABE) supports the fine-grained sharing of encrypted data.In some common designs,attributes are managed by an attribute authority that
<正>With rapid development and wide application of information technology,mankind is entering into an information age.The world where people live and work has b