Each system produces about 25 kw which is enough to power about 10 homes.
一套系统的发电量是25千瓦这可满足十个家庭的能源需求。
图解英语史(中)
For instance, words like quit, question, quarter, etc, were pronounced with the familiar " kw" sound in Anglo-Norman (and, subsequently, English) rather than the " k" sound of Parisian French.
The watt (symbol: W) is a derived unit of power in the International System of Units (SI), named after the Scottish engineer James Watt (1736–1819). The unit is defined as joule per second and can be used to express the rate of energy conversion or transfer with respect to time. It has dimensions of Mass·Length·Time.