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氦气发现150周年——小小氦气竟有大用途
source link: https://tech.sina.com.cn/d/s/2018-09-08/doc-ihivtsyi7355623.shtml
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新浪科技讯北京时间9月8日消息，据国外媒体报道，氦气是一种很有意思的物质。填进气球里，便能让气球高高升空；吸进嘴巴里，就能变出唐老鸭那般搞笑的嗓音。不过吸氦气可不是什么明智之举，因为它可以取代我们肺中的氧气、或引发其它呼吸道问题。除了这两点
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