Now, {HEAD ~ each inclined plane} 352 of the protrusion 35 of the battery 30 abuts against {TAIL ~ a corresponding wedge} 254 of the claw 252 of the cover 20 
abuts against
Now , { HEAD ~ each inclined plane } 352 of the protrusion 35 of the battery 30 abuts against { TAIL ~ a corresponding wedge } 254 of the claw 252 of the cover 20
OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH