应用表明：该交通信号声讯器安装简单，工作稳定，声讯提示清晰，为有视觉障碍的行人横过马路提供了极大方便。
On-the-spot experiments proves steady operation and easy installation and clear sound prompt of the device which can offer great convenience to the blind pedestrians.
由于RS232通信接口协议简单，工业控制系统已广泛应用RS 232口对各种设备进行信号采集和控制。
Since the protocol for RS232 is simple, RS232 has been widely used in various equipment to collect and control the signal data in industrial control system.
基于简单电感性本质安全电路的分析方法及其放电电流波形，对通信与信号电缆的本质安全性能进行了研究。
Based on the analysis method of the simple intrinsically safe inductive circuit and its discharge current waveform, studied on the intrinsically safe performance of communication and signal cable.
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