| 摘要 |
<p>A linear hydraulic actuator comprises a hollow main piston (14, 116, 213) axially moveable in an elongate cylinder (50, 111, 211) under the influence of hydraulic pressure, the main piston (14, 116, 213) defining a bore within which a seal member (52, 127, 227) is provided, the seal member (52, 127, 227) forming a sliding seal with the bore of the main piston (14, 116, 213).</p> |
