vacuum ultraviolet ray是什么意思 vacuum ultraviolet ray在线中文翻译

vacuum ultraviolet ray是什么意思，vacuum ultraviolet ray在线翻译，vacuum ultraviolet ray中文意思，vacuum ultraviolet ray的中文翻译，vacuum ultraviolet ray发音，vacuum ultraviolet ray例句，vacuum ultraviolet ray词组短语，vacuum ultraviolet ray怎么翻译，单词vacuum ultraviolet ray的意思