交流永磁电机在定子中加入励磁线圈，构成一种可调磁场的混合励磁电机。
To fix a coil of excitation on the stator of alternating current permanent magnetic motor made up a kind of hybrid excitation motor.
搭建了磁光晶体的磁致偏振特性测试系统，此系统可在连续可调磁场下0 ~ 1。
The optical system is established, in which the change of polarization state for magneto-optic crystal can be measured in continuous adjustable magnetic field 0 ~ 1.
采用“双悬线平衡法”，并利用外加可调磁场与地磁水平分量补偿的方法对地磁水平分量进行了测量。
To measure the horizontal component of geomagnetism, the "bifilar balance method" is used, together with an additional adjustable magnetic field to compensate the geomagnetic field.
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