短语词组短语afterheat utilization 余热利用decay afterheat 衰变余热afterheat recovery 余热回收afterheat hardening 余热淬火afterheat condenser 余热凝汽器afterheat steam 余热蒸汽afterheat reclamation 余热回收afterheat cooling 二次冷却;余热冷却Afterheat boiler 余热锅炉 返回 afterheat