ISM

industrial, scientific and medical (band)
(アメリカの)産業, 科学, 医学帯(域). 電波の帯域名. 無免許で使用できる電波の周波数帯域.
industrial, scientific and medical (band); a radio band spectrum; from 902 to 928 MHz; e.g. FCC(Federal Communications Commission) rules enable unlicensed use of SS(spread spectrum) radio communications

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