“4π measurement”的概念、定义、翻译、参考文献-科学参考

单词	4π measurement
释义	4π measurement Encyclopedia 理学原子核释 4π measurement4π测量法将放射源置于探测器内部，使源发出的射线能全部进入探测器的灵敏区，即在4π立体角内均能进行有效探测的方法。
随便看	finite continued fraction finite controller finite covering finite covering theorem finite cyclic group finite dam finite decimal finite definability finite deformation finite depletion finite derivative finite determinacy finite deterministic automaton finite development finite difference finite-difference approximation finite difference beam propagation method finite-difference beam propagation method finite-difference beam propagation method, FD-BPM finite-difference calculus finite-difference equation finite difference frequency domain method finite difference frequency domain method, FDFD finite difference method finite-difference method

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