“(uranium-thorium)/helium dating”的概念、定义、翻译、参考文献-科学参考

单词	(uranium-thorium)/helium dating
释义	(uranium-thorium)/helium dating Encyclopedia 工学〔地学中核技术〕释 (uranium-thorium)/helium dating(铀-钍)/氦年代测定矿物颗粒中铀、钍放射性衰变产生氦，通过测量矿物样品中放射性衰变产物氦-4（4He）、母体同位素铀-238（238U）和钍-232（232Th）的含量，从而获得矿物样品年龄的方法。
随便看	improbable Impromptu impromptu interview improper improper affine sphere improper automorphic transformation improper behavior improper bisecant improper character improper chord improper class improper component improper concave function improper conic improper conic section improper convex body improper convex function improper derivative improper differentiability improper distribution improper divergence improper divisor improper double integral improper eigenfunction improper element

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