This article introduce modification designation on adding ARMsignal circuit and the site test.
本文对MACHA爆炸机增加预备信号电路的改造设计、制做及现场试验作了介绍。
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If a special tag-reader is waved near the arm, a radio signal prompts the chip to transmit an identification number which is used to call up information about the wearer in a computer database.