随着生产自动化和管理现代化的发展,信息的传递、反馈和存储愈来愈重要,录音电话就是其中之一。它给煤矿生产调度、命令传达,和事故分析等工作带来了极大的方便。但目前市场上的录音电话,一盘磁带只能走带60min,存储量太少,给工作带来不便。容量扩展后的磁带,不失原磁带性能,还有: 1.增加了磁带存储量。一盘走带60rain的磁带,容量扩展后,可走带240min,相当于4盘磁带。 With the automation of production and the development of modern management, the transmission, feedback and storage of information are becoming more and more important, and the recorded telephone call is one of them. It brings great convenience to coal mine production scheduling, order transmission and accident analysis. But currently on the market recording telephone, a tape can only take 60min, storage is too small, to bring inconvenience to work. Capacity expansion of the tape, without losing the original tape performance, as well as: 1. Increase the amount of tape storage. A tape 60rain tape, capacity expansion, you can take tape 240min, equivalent to 4 tapes.