用137Cs放射源替代18F检验PET专用工作箱屏蔽效果的换算公式
용137Cs방사원체대18F검험PET전용공작상병폐효과적환산공식
The Conversion Formula on Examining Shielding Effect of the PET Special Box Using 137Cs Source as a Substitute for 18F
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