In order to avoid this kind of accident, the using of new circuit breaker with protection function of zero curve broken is extremely beneficial.
为避免该类事故的发生,采用新型的具有保护零线断线保护功能的断路器是非常有益的。
2
When two parameters of four-order cumulant function choose values of the diagonal direction and the off-diagonal direction of the matrix and the third parameter is zero, we can get the best matrix.