三种可调式滚轮架：手动丝杆可调式、手动螺栓移位式和电动滑板移位式。
Three types of adjustable turning rolls: manual lead screw adjusting, manual bolt shifting and electric sliding plate shifting.
专用于电动关节，水下螺旋桨，电动滑板车，大功率风扇。
Specialized for electric joint, underwater propeller, electric scooter, high-power fan.
接待员：那是电动滑板车，您可以骑着它，它是有电脑控制的。
Desk clerk: They are segway scooters. You can ride on it and it's operated by computer.
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