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... s 116, 117: Experiment No. 9 (Additional update for Qi Hen San and monthly votes)_2
“Vertical direction?” He Xingzhou just mentioned it, and the two immediately understood his meaning.
“Are you suggesting constructing double-tiered tubes near the station!” Wang Chenggang said, “Once the mobile platform accelerates through the circular tube, it synchronizes with the supersonic high-speed rail speed. At that point, it enters the double-layered vacuum tube.”
“The supersonic ...
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