Retarding {HEAD ~ deposition} of {TAIL ~ paraffin} from crude oil or natural gas with alkaline liquids 
of
Retarding { HEAD ~ deposition } of { TAIL ~ paraffin } from crude oil or natural gas with alkaline liquids
OTH HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH