短語(yǔ)詞組短語(yǔ)threshold kinetic energy 低限動(dòng)能threshold -energy 閾能threshold pumping energy 閾值泵浦能量threshold magnetic energy 閾值磁能threshold input energy 閾值輸入能量pulse threshold energy 脈沖閾能effective stop threshold energy 有傚閾能 返回 threshold energy