Continuous-variable quantum key distribution (CVQKD) with the local local oscillator (LLO) is confronted with new security problems due to the reference pulses
摘要:机械加工中的振动对于加工质量和生产效率都有很大影响,须采取措施控制振动。本文首先简要介绍了机械加工过程中的振动问题的危害,然后详细介绍了消除或减弱机械加工过程中的振动的具体方法和策略。 关键词:机械加工;振动;控制方法 中图分类号:TH161.6 文献标识码:A文章编号:1007-9599 (2011)05-0000-01 Vibration and Control Methods R
Perturbation problem of operator algebras was first introduced by Kadison and Kastler. In this short note, we consider the uniform perturbation of two classes o