“双泡沫”机头部宽大、向下倾斜，导致气流上升获得升力，所以它的尾翼可以更小。
The Double Bubble sports a wide, downward-sloping nose which airflow pushes up, so its tail wings can be much smaller.
方法采用增大油管直径和下加重杆技术，来减少油流上升阻力和增大杆柱下行动力。
Method Large diameter oil tube and weighting rod are adopted to decrease lifting resistance of crude oil and to increase lowering-in energy of the string.
它将会在这种气流上升如果想要，它能在空气中保持绝对静止很长的时间，即使在风中。
It will ascend in such currents if desired. It can remain absolutely stationary in the air, even in a wind, for great length of time.
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