反应堆芯 Traditional 反應堆芯 fǎn yìng duī xīn 🔊 reactor core + Review this word Meanings fǎn yìng duī xīn 反應堆芯 reactor core Its characters 反fǎncontraryHSK 5应yīngto agree (to do sth)HSK 7–9堆duīto pile upHSK 5芯xīnthe pith of the rush plant (used as a…