词汇	annular return duct
释义	annular return duct 环形回水管
随便看	human behavior modeling human behavior models human behavior physiology human behavior reaction Human behaviors human behavior school human behavior school of management human behaviour human behaviour genetics human behaviour school of management human being human-being human being activities human being and environment human being and nature human being, animal, plant human being as the end human being centered human being civilization humanbeing development Human-being development human being disgusting behavior human-being existence Human Being is end Human Being Is Ends