As one of the key technologies of the developing trunk line aircraft, research on the integrated management of hydraulic power systems in this thesis was carried out.

大型客机液压综合管理技术研究，作为大型客机关键技术之一，对推进大型客机液压系统研究工作具有重要的参考作用。

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Install, troubleshoot and maintain power transmission, vacuum, hydraulic and pneumatic systems, and programmable logic controls.

安装，故障排除和维护动力传动，真空，液压和气动系统以及可编程逻辑控制器。

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Use to design fluid power and hydraulic control systems.

用于设计流体动力和液压控制系统。

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It would rely more on electricity to run its systems than existing planes, which used hydraulic and pneumatic power.

WSJ: Boeing Shows How Innovation Can Be Messy

Since these boats have keels that are 3 meters or more deep to counterbalance the power of the sails, some owners opt for expensive hydraulic lifting systems to raise their keels and sneak into Caribbean anchorages.

FORBES: Mine's Lighter