A safety alert system by DTMF ( Dual - tone multifrequency ) mode is introduced.介绍一种采用DTMF ( Dual -ToneMultifreqency ) 信号方式通信的安全报警系统.The DTMF generator circuit is straight forward to construct.DTMF发生器电路可直接构建.Common Type ...
水闸门一开, 水便一下子涌了出来.As soon as the sluice gate was opened, the water surged in.水电站厂房尾水闸门吊装就位的形式多种多样.The hoisting forms for tailrace sluice gate of power house of hydropower station are various....
Kidscape runs monthly workshops for teachers.基德斯克普负责组织每月一次的教师研讨班。The clearing out of disused workshops laid bare thousands of Italianate glazed tiles.清理废弃的车间时发现了成千上万块意大利风格的釉面砖。A few large hotels maintain their own worksh...