The outerrotor has thetrendofrevolution along the inner rotor and this trend must be overcome by the cylinder via the action of a support force in an internal-meshing rotarycycloidcompressor.
It takes another upward bend with the second industrial revolution in the late 1800s, built on the internal combustion engine, electricity and telephony.
Even the left-wing Party of the Democratic Revolution, which makes most such claims, was last month riven by charges of foul play in its internal leadership contest.