These are only 18 feet on a side and designed to increase atmospheric drag and thus help satellites out of orbit.
这是一个只有18英尺的小型太阳帆,旨在增加大气阻力以帮助卫星脱离轨道。
Drag it onto the left side of the empty data flow.
将它拖放到空白数据流的左侧。
Create four new classes on the canvas: Drag class from the palette on the right side onto the canvas four times.
在画布上创建四个新类:将Class从右侧的调色板拖到画布上四次。
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