Treating a bowl of centrifuge as a clamped-free thin-walled cylinder, fromulas to calculate natural freguency are given by using Rayleigh's energy method.
本文将离心机转鼓视为一端固支、一端自由的薄壁圆筒，用瑞利能量法推导其最低阶固有频率，所得结果具有工程运算所需精度。
Through analysis on the causes of mechanical cylinder-knocking and fuel-oil cylinder-knocking of the diesel engine, this paper puts forward corresponding treating methods respectively.
通过分析柴油机机械敲缸和燃油敲缸的原因，分别提出了在实际运用中相应的处理方法。
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