短语词组短语haet exchange 热交换haet of sublimation 升华热line haet source 线热源haet of fusion 熔解热jal haet da 常用句haet of evaporation 蒸发热haet treatment electric furnace 热处理电阻炉haet of transfer 热迁移a dead haet 并列冠军 返回 haet