The boom assemblies are disposed between a chassis and a platform for raising and lowering the platform in {HEAD ~ interlocking relation} with {TAIL ~ an operating mechanism}, a guiding mechanism and a synchronizing mechanism 
with
The boom assemblies are disposed between a chassis and a platform for raising and lowering the platform in { HEAD ~ interlocking relation } with { TAIL ~ an operating mechanism } , a guiding mechanism and a synchronizing mechanism
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 TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH