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氩-氩年代测定
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氩-氩年代测定
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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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rare-earths-cobalt perma-nent magnetic material
rare earth-sensitized luminescence materials
rare earth solvent extraction separation and purification
rare earth sulfate
rare earth synergistic extraction
rare element
rare event
rarefaction
rarefaction analysis
rarefaction impulse deconvolution
rarefaction wave
rarefied gas dynamics
rarefied gas effects
rarefied plasma
rare gas
rare gas laser
rare gas; noble gas
Rare Isotope Accelerator complex for On-line Experiments
rarely used character
Rarely Used Font Table of Chinese Character Standard (Taiwan Region of China)
rare metal
rare metal; less common metal
rare metal ore deposit
rare minnow
Rare Old Edition of Quyi Qu Book Series · Chaozhou Song Book Volume
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