This scheme is base on difficulty of CDHP and calculability of DDHP, and it is provided with the main properties of group signature.
该方案基于CDHP的难解性和DDHP的可计算性，它满足群签名的基本特性。
2
Risks of assembly occupancies have source complicacy, intrinsical dualism, effect ponderance, limited calculability and spatiotemporal characteristics.
人员密集场所的风险具有来源的复杂性、本质的双重性、后果的严重性、有限可计算性和时空特性。
3
The implementation of forest green GDP calculability has vital significance to the forest macroscopic management and policy formulation of our country.