Critical'会话密钥criticaladj.批评的；挑剔的；决定性的；危险的adj.临界的critical state临界状态critical cases危重症critical flame临界火焰critical paint临界点critical grpup临界群critical field标准磁场critical ideal临界理想critical crack临界裂缝critical curve临界曲线Critical model临界态模型