hard-to-machine materials

hard to machine material

materials hard to machining

machine to machine

A Good Man Is Hard to Find

Expensive and hard to visit doctors

hard machine check

Hard Materials

hard to

hard to come by

hard to deal with

hard to defeat

hard to get data

hard to get to

hard to handle

Hard to leach gold ore

Hard to mine orebody

hard to pronounce

hard-to-bleach pulp