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1970年,国外一架飞机失事,死伤百余人,造成一次严重的事故。事后经过调查,罪魁祸首是飞机金属结构中的几个微小气泡。几个小小的气泡为什么会产生如此严重的后果呢?原来,金属中存在气泡,就好比被虫蛀了洞的竹筷子,结构强度降低,稍一受力,很容易在有洞的地方损坏。但是,金属中的气泡并不都是罪魁祸首。在有些场合中,它还是一个能工巧匠哩!因此,冶金工业采用粉末冶金的技术,专门生产各
In 1970, one plane crashed abroad, killing more than 100 people and causing a serious accident. After investigation, the culprit is the plane of the metal structure of several tiny bubbles. Why a few small bubbles have such a serious consequence? It turned out that the presence of air bubbles in the metal, like a wormhole moth bamboo chopsticks, structural strength decreased, a little force, it is easy to damage the hole . However, bubbles in the metal are not always the culprit. In some cases, it is also a skilled craftsman! Therefore, the metallurgical industry using powder metallurgy technology, specializing in the production of