It is important that {TAIL ~ the connecting area} of cross arm 10 is filled with the mineral casting to optimize {HEAD ~ the vibration} damping effect 
It is important that { TAIL ~ the connecting area } of cross arm 10 is filled with the mineral casting to optimize { HEAD ~ the vibration } damping effect
OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH