In this paper, based on provable security theory, a provable security cipher DFC is improved on speed without lost of security by means of fast implementation of square hash function.
介绍基于对称密码系统的可证明安全理论，利用平方哈希函数实现技术，对一种可证明安全算法DFC实施改进后，安全性没有损失，但是速度得到了提高。
Based on the implementation of digital control of each DFC mode with microprocessor, this paper presents a scheme for multimode synthesis and conversion between each other.
本文在微处理机单独实现各模态控制功能基础上，对各模态功能进行综合，指出模态转换的实现技术。
Using the automated mercury vapor analyzer and dynamic flux chamber(DFC) method, the pathways of mercury emissions to atmosphere were measured at a closed landfill in Wuhan, China.
利用自动测汞仪和动力学通量箱技术，对武汉市某生活垃圾填埋场封闭的扩建部分向大气释放汞的途径进行了研究。
DFC take the initiative to use a variety of Ways to reduce the cost of the product, and the DTC to meet a given target cost and in accordance with the requirements of the user design.
DFC主动地运用各种方法降低产品的成本，而DTC是为了获得一个满足给定的目标成本并符合用户要求的设计。
When adopting FEA to model, DFC could not only apply into incremental approach with a fully coupled elastic and plastic damage model, but to one step inverse approach.
利用有限元方法模拟时，韧性断裂准则既可以应用到完全耦合的弹塑性损伤模型的增量方法中，也可以应用到一步有限元逆算法中。
When adopting FEA to model, DFC could not only apply into incremental approach with a fully coupled elastic and plastic damage model, but to one step inverse approach.
利用有限元方法模拟时，韧性断裂准则既可以应用到完全耦合的弹塑性损伤模型的增量方法中，也可以应用到一步有限元逆算法中。
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