In this case there are two, the getter and setter methods that accompany the motorfield, as shown in Figure 3.
在本例中，这样的方法有两个，即与motor相伴的getter和setter方法，如图3所示。
2
PM motors, conversely, derive the field from high energy permanent magnets, so that no power is required to build the motorfield and more power can be devoted to torque generation.