The compensation current results in flux in the auxiliarycore, making the flux of the main core zero, and thus reduces the error.
补偿电流在辅助铁芯中产生磁通，使主铁芯达到零磁通，从而减小误差。
2
The flux change in the specimen can be measured from the auxiliarycore on which there is an equivalent measuring coil of 1-1000 turns.
辅助铁心绕有1 ~ 1000匝的等效测量线圈，从这个铁心上测量到样品的磁通变化。
3
Meanwhile questions on how to solve without auxiliarycore masonry and construction technique of asphalt concrete core are raised after the auxiliary core's cancellation.