A device equipped with a fluorescent screen on which the internal structures of an optically opaque object, such as the human body, may be continuously viewed as shadowy images formed by the differential transmission of x-rays through the object.是什么意思_A device equipped with a fluorescent screen on which the internal structures of an optically opaque object, such as the human body, may be continuously viewed as shadowy images formed by the differential transmission of x-rays through the object.在线翻译_英语_读音_用法_例句