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日本科学研究院金属学院的专家们制成了一种不锈钢。其表面磨损后可在真空中加热,以便使它加固。钢内加入硼和氮。在加热的过程中,其原子被结晶质的晶格逐出,钢的表面形成了特别坚硬的硼化氮薄膜。当
Japanese Academy of Science Institute of Metals experts made a stainless steel. Its surface can be heated in a vacuum after it has been worn to reinforce it. Steel added boron and nitrogen. During heating, the atoms are expelled from the crystalline lattice and the surface of the steel forms a particularly hard boron nitride film. when