An object of the present invention is to provide {HEAD ~ a wave gear drive} which minimizes decrease in efficiency at {TAIL ~ small speed change ratio} 
An object of the present invention is to provide { HEAD ~ a wave gear drive } which minimizes decrease in efficiency at { TAIL ~ small speed change ratio }
OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL