短语词组短语primary ampere -turn 准确级back ampere -turn 反安匝数;逆向安匝数axial ampere -turn 轴向安匝stator ampere -turn 定子安匝virtual ampere -turn [电]有效安匝数;有效安匝field ampere -turn [电]励磁安匝ampere -turn number 安匝数 返回 ampere turn