In addition, {HEAD ~ the pocket inner surface} of the retainer of the transmission apparatus is formed in {TAIL ~ a curved surface} surrounding a peripheral portion of a ball housed in a pocket, thus allowing easy and accurate formation of pockets 
is formed in
In addition , { HEAD ~ the pocket inner surface } of the retainer of the transmission apparatus is formed in { TAIL ~ a curved surface } surrounding a peripheral portion of a ball housed in a pocket , thus allowing easy and accurate formation of pockets
OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH