Finally, the closer to perpendicular the current is with respect to the magnetic field's direction, the stronger the force is.

最后，电流相对于磁场方向越接近垂直，力就越大。

The magnitude of the vector is the strength of the magnetic field, and the direction of the vector is the field's direction.

矢量的大小就是磁场的强度，矢量的方向就是磁场的方向。