opposite phase

reactance of opposite phase sequence

反相序电抗

A large number of EAF generated high-order harmonic, APF inject to grid with amplitude equal and the opposite phase current harmonic the power with controllable power semiconductor devices.

电弧炉正常工作时产生大量高次谐波，APF即利用可控的功率半导体器件向电网注入与谐波源电流幅值相等、相位相反的电流，使电源的总谐波电流为零，达到实时补偿谐波电流的目的。

if the velocity relationships are revised, then the hyperbola is of the opposite phase from the reflection.

如果速度关系颠倒，则双曲线相位便与反射的相位相反。2.the ethyl acetate extract is repeatedly separated by normal phase, opposite phase and gel column chromatography so as to obtain three parts;将乙酸乙酯提取物通过正相、反相以及凝胶柱层析反复分离得到三部分；