field n.田地；领域；运动场；场地；田野；JAVA中的范畴vt.接球；派……上场；顺利处理vi.担任外场员adj.田间的；野外的
双语例句
A unit of magnetic flux density equals to 1 maxwell per square centimeter. 一种磁通量密度单位，等于每平方厘米麦克斯韦。
In particular, approximate expressions for the air gap flux and the airgap flux density are derived. 特别是，近似表达式气隙磁通和气隙磁通密度的计算公式。
Considering the inconvenience of using the magnetic vector potential as state variable, magnetic flux density is used as the state variable in the design optimization. 针对以往用磁位作为状态变量不方便的情况，文中直接采用磁通密度为状态变量。
