jié / jīng / wán / chéng / hòu / gōng / zuò / rén / yuán / bǎ / mǔ / yè / pái / rù / huí / shōu / guàn

结晶完成后，工作人员把母液排入回收罐。

After crystallization was complete, the workers drained the mother liquor into a recovery tank.