2脉冲计数装置
2 pulse counting assembly
2pulse counting assembly
4脉冲计数装置
4 pulse counting assembly
保健物理对数计数率计
health physics log ratemeter
保健物理用对数计数率计
health physics log ratemeter
布尔代数计数法
Boolean algebra system of notation
常数计数原理
principle of counting constants
低本底脉冲计数装置
low-backgroup pulse counting assembly
low background pulse counting assembly
低强度贝他计数装置
low-level beta counting assembly
低水平-计数装置
low level beta counting assembly