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自然界的腐蚀,每时每刻都在悄无声息地进行着。梅雨天磨好一把切菜刀,第二天一看,原来磨得发亮的刀覆盖着一层黄色的铁锈,这就是氧化铁,是金属被腐蚀的一种表现。当年,拿破仑与俄国沙皇作战,俄国军队从仓库里取出军队的制服,发现原来晶亮的钮扣全部变得灰不溜秋,轻轻用手一摸,成了一撮灰土。亮晶晶的锡钮扣,经历了零下30多度的低温环境就
The erosion of nature is carried out quietly all the time. The rainy days grind a chopper, the next day a look, the original shiny knife covered with a layer of yellow rust, which is iron oxide, is a manifestation of metal corrosion. At that time, Napoleon fought against the Russian Tsar, and the Russian army took out the uniform of the army from the warehouse and found that all the bright buttons had become completely gray and touched by hand, turning them into a handful of dirt. Shiny tin buttons, experienced minus 30 degrees over the low-temperature environment