摘要：广播节目的安全优质播出需要强有力的技术保障，而调音台是音频信号传输过程中不可或缺的一个非常重要的环节。通过对数字调音台使用的介绍可以使工作人员对其设计理念和操作方式有一个准确的把握，为我台播出向数字化顺利过渡奠定一个良好的技术基础。

摘要：The paradigms of chemical engineering discipline are discussed. The first paradigm of Unit Operations and the second paradigm of Transport Phenomena are well recognized among the chemical engineers all over the world, and what the next paradigm is remains still an open question. Several proposals such as Chemical product engineering, Sustainable chemical engineering and Multi-scale methodology are considered as candidates for next paradigm. Might Computational Chemical Engineering be the next one, which is advancing the discipline of chemical engineering toward ultimate mechanism-based understanding of chemical processes? This possibility is comparatively expounded with other proposals, and the scope and depth of computational chemical engineering are shortly listed.