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封堵中国滚子轴承37年，我轴承产业仍进第一梯队，已全面国产化
封堵中国滚子轴承37年，我轴承产业仍进第一梯队，高铁轴承 盾构机巨型主轴承 大直径风力发电机 大负载盾构机 高转速航空发动机轴承 天文射电望远镜用的高精度方位轴承和俯仰轴承 已全面国产化
言炎 老师198/360
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