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 background pulse counting assembly
low-backgroup 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