narrow-beam radiation狭: narrow束: bind; tie辐射: radiation; exposure; radio; ...束辐射: beam radiation成束辐射: beam radiation; beamed radiation; beamed rediation下载手机词典可随时随地查词查翻译关注微信公众号：chachacidian，回复:狭束辐射，即可在微信中查询翻译
