Friction welding joins parts using heat generated by mechanical friction between the parts. https://t.co/JkeTkSugbX
RT @BJMbraun: How to be an effective political economist: Laser focus on the neuralgic points of the state-market nexus, follow
RT @BJMbraun: How to be an effective political economist: Laser focus on the neuralgic points of the state-market nexus, follow the money,…