gamma-ray meter 加马射线计

gamma ray level meter 射线液位计

gamma ray density meter 射线密度计 ; 伽马射线密度计

gamma-ray backscattering meter 加马射线回散射计

gamma-ray absorption fluid density meter 伽马射线吸收型流体密度计

gamma a ray level meter 射线液位计

gamma a ray density meter 射线密度计

wide-range gamma-ray doserate meter 宽量程γ射线剂量率计