The invention discloses a device for detecting an electric energy meter error under a harmonic condition by adopting a watt-second method, and a detecting method.
本发明公开了一种采用瓦秒法检测谐波条件下电能表误差的装置及检测方法。
2
During his second trip in 1617, he sent his son, Watt Raleigh, with an expedition up the Orinoco River.
在1617年的第二次征途中，他派他的儿子瓦特·雷利随着一支探险队向奥利诺科河的上游进发。
3
In one second, a cell performs about 10 million energy-consuming chemical reactions, which altogether require about one picowatt (one millionth millionth of a watt) of power.