| 摘要 |
<p>A cylinder head 14 is provided above a cylinder 7 for slidably accommodating a piston 8. A cylindrical movable sleeve 32 is disposed movably between the cylinder 7 and the cylinder head 14. A connecting portion is provided above the cylinder 7, and the cylinder 7 and the cylinder head 14 are connected via the connecting portion. A body cover 2 covers an outside of the connecting portion.</p> |
