| 摘要 |
The controller for the driving velocity of a vuilleumier system includes a first small piston coupled to a rod of a high-temperature displacer, a second small piston coupled to the rod of a low-temperature displacer, a hydraulic portion case having a hydraulic chamber into which the first and second small pistons, connection pipes, and a linear motor installed around the hydraulic chamber, thereby eliminating friction loss.
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