The difference of economical performances between a Shanghai diesel powered and a CNG powered bus is investigated by using life cycle cost assessment method (prices in 2003).

利用生命周期成本评估方法对上海市柴油和CNG公交车的经济性能进行了评价（2003年价格）。

youdao

If you travel by bus in Sao Paulo,Brazil these days your vehicle may be powered by hydrogen fuel cells.

VOA: special.2009.09.07

The two 5W-powered USB ports allow users to connect even two bus-powered external hard drives and also function as a backup battery for two iPads.

ENGADGET: Hyper debuts iUSBport mini, 2 and HD cloud storage and streaming devices (hands-on)

The G-RAID mini is FireWire bus powered - even when using USB 3.0 for data transfer.

ENGADGET: G-Technology updates G-Drive mini and G-Raid mini with 1TB HGST Travelstar hard drives

G-RAID mini can be FireWire bus powered.

ENGADGET: G-Technology kicks out USB 3.0 G-Drives for Macs, keeps your Retina MacBook Pro well-fed