气球（航空器）
气球（英语：balloon）是娱乐性航空器个一种，渠配备有用来填充气体个袋状物，当充入气体个密度小于渠个周围个环境个气体密度，且由此压力差产生个静浮力大于气球本身托渠个搭载物个重量时气球就可浮升。
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