...有 孔介质流体力学Flow in Porous Media之一部份，若 缩小范围则专限于水井对地下水流之影响，则称为 井水力学(Well hydraulics)。
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Change unit with double gripper and gripper head, tilting 180 degrees, Gripper unit driven by hydraulics, change unit movable horizontal as well as vertical, realized with linear ways.
双爪机械手，可回转180度，液压驱动，可沿着水平和垂直的方向做直线运动。
This paper presents features, research contents and key technologies of water hydraulics, as well as research statuses home and abroad, and makes prospect for its application.
文中详细论述和分析了纯 水液压传动特点，指出了其主要研究内容及关键技术，并介绍了国内外的研究进展和展望。
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