... second critical field 第二临界磁场 second critical speed 第二临界转速 second derivation control 按二次导数调节 ...
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By analysing the amplitude of the shaft vibration, this article concludes that when the bolts get loose, it will result in resonance at the second critical speed and serious vibration.
本文利用振动测试记录，具体论证了汽轮机排汽端一侧轴承松动， 而导致汽轮机第二临界转速共振和强烈共振。
Well, this critical speed for a small ball bearing would be some hundred meters per second.
小滚珠的临界速度，也许是每秒几百米。
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