The portable or wearable device realizes these functions by periodically polling and receiving information tags within the transmitting distance of the device.
便携式或可佩戴器件通过在器件的发送距离内周期性调查和接收信息标签而实现这些功能。
This article introduces a method of arc initiation and stabilization, which is used in low current DC TIG welding, it analyzes the controlling circuit that realizes these functions.
介绍一种小电流直流tig焊中的引弧及稳弧方法，并对实现此功能的控制电路进行了详细的分析。
The system realizes many functions such as query, adding, deleting, modification, report printing and so on. And these functions make alarm more concrete in form, and more effective in realization.
本文论述的可定时显示报警系统实现了设备信息的查询、增加、删除、修改和报表打印等功能，使定时报警的形式具体化，获得了理想的定时效果。
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