求翻译：Avoid exposure-laser radiation is emitted from this aper

求翻译：Avoid exposure-laser radiation is emitted from this aper laser radiation when open AVOID DIRECT EXPOSURE TO BEAM 英语翻译1.The beam that is emitted by a laser differs in several prolonged exposure to harmful radiation是什么意思 英语翻译This effect is mainly used for thermal radiation detecti 怎么翻译dying from exposure to toxic substances radiation is the transfer of heat energy from one place of r exposure怎么翻译 hg exposure怎么翻译? 英语翻译this is my order for :1 - laser tube 80W Height about 16 laser what number is missing from this series?翻译