twin-tube heater

例句：

1. 1. The twin-tube heater is a popular choice for heating homes in cold weather.
   双管加热器是寒冷天气中家庭取暖的热门选择。
2. 2.The twin-tube heater has been designed to provide even heat distribution throughout the room.
   双管加热器被设计成在整个房间内均匀分布热量。
3. 3. The twin-tube heater is easy to install and maintain, making it a cost-effective option for many households.
   双管加热器易于安装和维护，对于许多家庭来说是一个经济实惠的选择。