This article introduces the general concepts of gaseous fuel enginegas loss rate and heat loss rate, and puts forward some problems to be paid attention to in volume measurement.
介绍气体发动机气耗率和热耗率的基本概念，提出了体积法测量中应注意的问题。
2
As soon as the driver puts the car in gear and touches the gas pedal, the engine starts back up.
司机一挂上挡，踩下油门踏板，发动机就重新启动了。
3
In testing, the Jetpack could travel at 60 miles per hour for up to 30 miles, and as high as 7,800 feet using a gasengine and two ducted fans.