The evaluation method of channel unit hydraulics performance by ratio of burble radius to span is presented.
提出了利用漩跨比对流道单元水力学性能进行评估的方法。
It should have left Earth on Friday but has been held on the ground because of an electrical failure in a switchbox connected to a hydraulics power unit.
它本应在星期五离地，但是现在还留在地面，因为与液压动力装置相连的一个开关箱发现有电气故障。
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。
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