欧美亚久久综合一区二区色_亚洲一级免费电影_在线观看黄线网站_波波视频国产色情图片网手机版_日韩av中文无码人妻无码_乖打开双腿里面也要涂春荮_男人插女人欧美极品_国产欧美亚洲日韩视频精品_影音先锋+在线+母亲_伦理片秋霞网伦理片

High Energy Ray Shielding

Nuclear radiation has been widely used in the field of nuclear technology, for example: material thickness measurement or defect detection, nuclear medicine, radiation breeding, radiation imaging, etc., the list goes on. There are many kinds of radiation sources in the application of nuclear technology, including a single type of radiation source that emits a particle, b ray, g ray or neutron, and a combination of these types of radiation sources. Therefore, shielding design needs to be targeted according to the type and intensity of the radiation source.