n.碰撞截面 crosssection: 交差截面;截面; 修改器的截面生成器activation crosssection: 激活截面available crosssection: 有效截面backscattering crosssection: 反向散射截面bulk crosssection: 總截面下載手機(jī)詞典可隨時(shí)隨地查詞查翻譯