| 摘要 |
This invention is about the airtight structure between the adjacent cylinders, especially in the fluid suction and discharge appts. W/which has the cylinder block having several cylinder(2) & pistons. A suction of radius from central (5'd) expanding to the outer direction of radius from central part(5'a) between the reeds(5'b). The circular groove with larger radium than the radius(r) is formed on the open face of cylinder block and the depth of the groove is corresponding to the thickness of the suction valve.
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