磁平是磁学的物理量,它与电平有着本质上的差别。在磁性记录技术计量中,定义为单位磁迹宽度内的短路带磁通量。它的计量单位用国际单位 SI 制表示是 nWb/M 或者 PWb/mm,用 CGS 制表示是 mMx/mm。由此可见磁平的物理概念是带磁通密度。录音机、磁带、磁头的测量以及广播节目的录制,对磁带的剩磁常有一定的要求,以便 Magnetism is the physical quantity of magnetism, it is essentially different from the level. In magnetic recording technology, it is defined as the short-circuit flux within a unit track width. Its unit of measurement is expressed in units of SI SI nWb / M or PWb / mm, expressed in CGS mMx / mm. This shows that the magnetic level of the physical concept is with flux density. Tape recorders, tapes, head measurements and broadcast recording programs, tape remanence often have certain requirements, so that