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       Stage machinery safety issues involving the design, manufacture, installation, inspection, operation and use and maintenance aspects of maintenance, the theater management system, a part of any improper handling, accidents can happen machinery or physical safety of safety-related incidents...

       Sound system human operator error "Technology people-oriented", that is not bad, no matter how good, then people have advanced equipment to operate, of course, people will make mistakes, whereby the sound system of some operational errors are inevitable...

       Mentioned sound systems, of course, we first think of the mixer, the mixer, there are multiple methods to describe the most appropriate way to console likened to a sound system of the heart, how the heart blood circulation...