N a unit of energy equal to a power of one watt operating for one hour. 1 watt-hour equals 3600 joules 瓦时(能量单位，1瓦时=3600焦耳)
In the early 1990s, such batteries had an energy density of about 100 watt-hours per litre.
在1990年代早期，这种电池每升的能量密度是大约10 0瓦时。
The lowest amount of solar energy the rover is expected to receive is about 275 watt-hours per sol.
漂泊者被预期接受的最低量的太阳能大约是每大音阶的第五音27 5瓦时。
Finally, a fully enclosed battery pack provides between 16.5 and 22 watt-hours of operation (depending upon cell technology).
最后，全封闭的电池组可提供16.5到22瓦小时的连续操作(取决于电池技术)。
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