hydraulic powered cylinder 基本例句 液压缸 A spring holds the other ends in contact with the piston of a hydraulic cylinder.另一端由一个弹簧托住,与液压缸的活塞相接。 In front brakes it is usual to hydraulic cylinders in order to equallise the pressures exerted by the shoes.在前制动器中,通常使用两个液压缸,用以平衡制动蹄所产生的压力。