首页>
外国专利>
Apparatus of the distribution of air, steam, a gas or any other liquid serving as an agent for a machine with two pistons, the connecting rods, real and imaginary, have a phase difference of 90 degrees
Apparatus of the distribution of air, steam, a gas or any other liquid serving as an agent for a machine with two pistons, the connecting rods, real and imaginary, have a phase difference of 90 degrees
