英语词汇“a guard against”的读音、翻译、释义、用法及例句-智慧网

词汇	a guard against
释义	a guard againsta guard against1.■防护…的物件Miners wore a helmet as a guard against falling rocks.矿工头戴钢盔, 防护落下的岩石。
随便看	trapped particle dynamics trapped particle instability trapped particles trapped plasma avalanche triggered transit time diode trapped-program interrupt trapped radiation trapped radiation model trapped radical trapped rare gases trapped species trapped state trapped surface trapped wave trapper trappers trappide trapping trapping agent trapping apparatus trapping centre trapping constant trapping corner trapping cross-section trapping flux trapping index

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