This technology is using current buoyancy change, floating body to control drain switch of passageway.

该技术利用液流浮力变化驱动浮体升降来控制排水通道的开闭。

youdao

Body floating in the sky, long before the story begins.

身体在天上飘，好久好久，故事才愿意开始。

youdao

Body floating in the sky, long before the story begins.

身体在天上飘，好久好久，故事才愿意开始。

youdao