短语词组短語bremsstrahlung thick -target 厚靶制動輻射thick -target yield measurement 厚靶實騐方法thick TiDx target TiDx 厚靶thick Be target 厚鈹靶Thick -target Yield 厚靶産額infinitely thick target 無限厚靶thick target model 厚靶模型 返回 thick target