1. The amount of magnetic flux in a unit area taken perpendicular to the direction of the magnetic flux.Also called magnetic field strength, magnetic flux density
磁感应强度：在磁通线垂直方向上一个单位面积上的磁通数量也作 magnetic field strength， magnetic flux density
2. The process by which a substance, such as iron or steel, becomes magnetized by a magnetic field. The induced magnetism is produced by the force of the field radiating from the poles of a magnet.