gross thermal efficiency

例句：

1. 1.The new engine design has significantly improved thegross thermal efficiency of the car.
   新型发动机设计显著提高了汽车的总热效率。
2. 2. Theresearch on the gross thermal efficiency of solarpanels is still in its early stages.
   关于太阳能电池板总热效率的研究仍处于初级阶段。
3. 3. The company's gross thermal efficiencyis among the highest in the industry.
   该公司的总热效率在行业中处于最高水平。