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1.绪言近年来,对于汽轮机和发电机用的转子轴,随着其大型化而质量要求越来越高。1961年,由英国的 William Beardmore Glasgow 所试验,于1963年达到实用程度的真空碳
1. INTRODUCTION In recent years, as the rotor shaft for steam turbines and generators has become increasingly larger in quality as its size increases. In 1961, a vacuum carbon experimentally achieved by William Beardmore Glasgow in England in 1963