短語詞組短語barrier penetration in fission 分裂中障壁貫穿barrier -layer penetration 阻擋層穿透missile barrier penetration 飛射物屏障貫穿件general barrier penetration 一般勢壘貫穿potential barrier penetration 勢壘穿透square barrier penetration 方勢壘貫穿probability potential -barrier penetration 勢壘穿透機率barrier penetration in alpha decay 阿伐衰變內(nèi)障壁貫穿penetration barrier 障壁穿透 返回 barrier penetration