英语词汇“natural background radioactivity”的翻译、意思、用法、释义-英汉汉英双解词典

词汇	natural background radioactivity
释义	natural background radioactivity 天然本底放射性
随便看	short strangle short strap short straw short-straw short-straws short straw sieve short-straw sieve short-straw variety short streaking short streamer short-stressed mill housing short stress path rolling mill shortstretch short stretch short strigose short string short strip short stroke short-stroke shortstroke blank holder short stroke control short stroke cylinder short stroke engine short-stroke engine short stroke lift table