The significance of the information hiding technique based on bit-stream recomposition is presenting new idea of inspection of secret information on Internet. 这部分工作的重要意义不仅在于可以实现基于码流重组的信息伪装,而且为Internet上秘密信息的检测提出了新的思路。
The test study of triaxial stress for two typic rocks, J_c and T_c, under confined pressures is presented in this paper. It is of great significance to the design of bits and the application of bit types. 本文提供了两种标准岩石Jc~2和Tc~2在围压下的三轴应力试验,它对钻头设计及选型非常重要。
The result has important engineering practical significance in guiding the hydraulic structure optimization design and improving the performance of the PDC bit. 本研究成果对指导PDC钻头的水力结构优化设计、提高PDC钻头的性能具有重要的工程实际意义。
This paper has immediate significance to research two-stage PDC bit completely. 本文对双级PDC钻头进行较全面研究具有重要意义。