一种方案建议使用海绵石建造穹顶以减小穹顶自身重量。
One thought the dome should be made of "sponge stone" to keep the weight down.
建造地面板和附面层吸除装置，证明该方案是很成功的。
After building the ground plate and boundary layer suction equipment, the a…
建造地面板和附面层吸除装置，证明该方案是很成功的。
After building the ground plate and boundary layer suction equipment, the a…
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