How to check the connection correctness of "l", "n", "s" lines is discussed on the shortcomings of on-load test for zero-sequence power directioncomponent.
针对当前零序功率方向元件带负荷试验的不足之处，讨论了如何检查“L”、“N”及“S”线的接线正确性。
2
In theory, this could one day provide a key component of any nanoscale electrical circuit-a way to mechanically turn the current on and off or change its direction.
理论上讲，这种机械切换电流通断或方向的方法，或许有一天会成为任何纳米尺度电路的关键元件。
3
And we looked at the component of a vector field in the direction that was normal to the curve.