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油站等三险地区的手机信号屏蔽器设计
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作者 邵雪平 欧幸宝 潜国军 《中国新通信》 2019年第10期162-162,共1页
手机信号屏蔽器,顾名思义,是用来屏蔽手机信号的,在油站等三险地区的特殊场景下,手机信号屏蔽器发挥着十分重要的作用。对此,本文主要研究了手机信号屏蔽器的设计,系统构成主要包括射频功放、压控适应振荡器、锯齿波发生器等部分。系统... 手机信号屏蔽器,顾名思义,是用来屏蔽手机信号的,在油站等三险地区的特殊场景下,手机信号屏蔽器发挥着十分重要的作用。对此,本文主要研究了手机信号屏蔽器的设计,系统构成主要包括射频功放、压控适应振荡器、锯齿波发生器等部分。系统能够发出干扰信号,阻止手机对基站发出正常数据进行监测,进而使手机与基站连接断开。该屏蔽器对于各类制式的通讯工具均可有效屏蔽,对保障三险地区安全有重要的意义。 展开更多
关键词 油站 三险地区 手机信号屏蔽器 设计
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A disposal strategy of industrial hazardous wastes in the Three Gorges Region
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作者 黄本生 《Journal of Chongqing University》 CAS 2003年第1期41-45,共5页
A large quantity of industrial hazardous wastes (IHWs) accumulates in the Three Gorges Region. This study found that approximately 15 000 t IHWs were piled in the region by October 2001. These IHWs came from various s... A large quantity of industrial hazardous wastes (IHWs) accumulates in the Three Gorges Region. This study found that approximately 15 000 t IHWs were piled in the region by October 2001. These IHWs came from various sources and were complex in composition, mostly toxic and difficult to be disposed. IHW is regarded as a potential threat to the ecological environment, water resources and survival of local residents. It is important and indispensable to dispose the waste properly. To meet the regulation requirements on the disposal of IHWs and to minimize environmental effects on the Three Gorges Region, a disposal strategy is proposed, according to which approximately 600 t of the IHWs can be disposed by chemical stabilization, incineration and other treatment measures, and the rest need be stockpiled in safe and reliable places situated above the 177 m impoundment line of the Three Gorges dam. 展开更多
关键词 the Three Gorges Region industrial hazardous waste (IHW) removal and disposal
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