fuel efficient rpm range
燃油效率转速范围
以上为机器翻译结果，长、整句建议使用 人工翻译 。
Others are offering continuously variable transmissions (CVT), which have no traditional gears but keep the engine at its most fuel-efficient RPM across a wide range of speeds.
FORBES: 10 Ways Automakers Are Helping You Spend Less On Gasoline
应用推荐
模块上移
模块下移
不移动