effective watt
常见例句
- Thanks to pressure from environmental activist groups, a 2007 law passed by the Democrat-controlled Congress and signed by Republican President George W. Bush will make the sale of standard incandescent 100-watt bulbs illegal effective January 1, 2012, 75-watt bulbs on Jan. 1, 2013, and 60- and 40-watt bulbs as of Jan. 1, 2014.
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