单词	理论性札记
释义	同理论性笔记--理论性札记
随便看	background tile background track background value of soil element background vapor pressure background vapo(u)r pressure background variable background vibration level background video background visibility background voltage noise background-- x-ray background， beta background， continuous background， cosmic-ray background， diffuse background， diffuse scattering background， gamma background， instrument background， natural radioactivity background， neutron background， noise background， radiation background， radioactive background， radioactivity background， room