短语词组短语heliacal setting [天]偕日落;[天]夕没;偕日降Heliacal risings 偕日升heliacal scanning 螺旋扫描heliacal rising [天]晨出;偕日出heliacal cycle 太阳周heliacal solar 太阳的heliacal energy water heater 太阳能热水器heliacal rising and setting 偕日升降 返回 heliacal