Trainer for trouble shooting of pump s automatic switching system 泵浦自動(dòng)切換系統(tǒng)故障診斷與排除訓(xùn)練器
Private automatic switching system 私用自動(dòng)交換系統(tǒng)
Automatic switching system 自動(dòng)操作裝置
百科解釋
In data communications, an automatic switching system is a switching system in which all the operations required to execute the three phases of Information transfer transactions are automatically executed in response to signals from a user end-instrument.