For use of laser beams transmitted from one unit of solid laser generating device A1 on the ground, {HEAD ~ the number} of {TAIL ~ units} should be 150 in view of cost performance 
of
For use of laser beams transmitted from one unit of solid laser generating device A1 on the ground , { HEAD ~ the number } of { TAIL ~ units } should be 150 in view of cost performance
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH