low heat value

例句：

1. 1. The new energy vehicle has a low heat value, which makes it more environmentally friendly.
   这款新型电动汽车的低热值使其更加环保。
2. 2.The researcher found that the low heat value of the substance could be used to improve its thermal conductivity.
   研究者发现，该物质的低热值可以用来提高其导热性。
3. 3.The low heat value of the fuel is a significant advantage for the engine's efficiency.
   燃料的低热值是发动机效率的一个重要优势。