It is the first car of its type to have this designfeature.
这是同类型汽车中首部具备这种设计特点的。
《牛津词典》
2
Constant variations in the amount of sunlight available on Earth at any given location make energy storage a necessary designfeature of terrestrial solar-energy systems.
在地球上任何一个特定地点，阳光的不断变化使能量储存成为地球太阳能系统的一个必要设计特征。
3
As a basic designfeature in the U.S., plants are not literally self-powering.