According to {TAIL ~ a fourth aspect}, {HEAD ~ an improvement} is made on the electromagnetic drive, which can be applied not only to the electromagnetically controlled spring clutch mechanism, but also to other types of electromagnetic clutch mechanisms 
According to
According to { TAIL ~ a fourth aspect } , { HEAD ~ an improvement } is made on the electromagnetic drive , which can be applied not only to the electromagnetically controlled spring clutch mechanism , but also to other types of electromagnetic clutch mechanisms
REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH