accumulator piston的用法和樣例：
例句
- Under different last impacting velocity,the stress and strain of the piston are analyzed.
風動衝擊器活塞的衝擊末速度決定了衝擊器的工作性能。 - The loading characteristics and destruction pattern of DTH hammer pistons are examined.On the basis of this,Some measures are put forward to prolong the Service life of the piston.
本文從分析潛孔衝擊器活塞的載荷及破壞情況入手，介紹了一些提高活塞壽命的措施。
