The objective of the integrated design and development activity is to further improve power density, increase energy efficiency, and to reduce manufacturing cost.
2
在美国,道路最佳使用效率的理想车辆密度大约是每车道英里50辆车。
In America, the optimum density for the best use of road space is around 50 vehicles per lane-mile.
The next goal is to find a similarly efficient second catalyst to transform the by-products into an energy-dense fuel like methanol to give gasoline a run for its money.
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效率密度
衡量某一具体效率当量的参数值。工作效率(We - work efficiency):简单计算为单位工作时间内完成的工作量的当量与总工作量的当量的比值。