free-riding

free free beam

free free collision

free free transition

FREE-FREE

free-free absorption coefficient

free-free absorption cross section

Free-free beam

free-free boundary

free-free cylindrical shell

free-free energy transition

free-free modal test

free-free transition

notched free-free beam

bubble-free and trim-free firing

chrome free and formaldehyde free tannage

free discharge=free out

free harbour=free port

free medical service; free medicare; public health service