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氩-氩年代测定
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氩-氩年代测定
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argon-argon dating
氩-氩年代测定
利用中子活化法使样品中的39K经过39K(n,p)39Ar反应转化为39Ar,然后用质谱计测定其40Ar/39Ar的比值,代替通常在钾-氩法中的40Ar/40K比值,计算岩石或矿物的地质年龄。
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coal-accumulating period
coal-accumulating province
coal accumulation
coal-accumulation belt
coal-accumulation center
coal accumulation controlled by basin
coal accumulation in highstand systems tract
coal accumulation in lake transgressive systems tract
coal accumulation in transgressive systems tract
coal accumulation model for barrierless coast
coal accumulation system
coal alkylation
coal and gas co-production
coal and gas outburst
coal and rock support machinery
coal as fuel
coal ball
coal balls
coal-based alcohols and esters
coal-based chemical
coal-based ester synthesis
coal-based ethanol synthesis
coal-based fuel
coal based methanol
coal-based methanol
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