It is especially pointed out that ignoring the effect of coupling the base frame and the foundation with the mast will lead to errors that are not acceptable in engineering.
强调指出，在这种振动分析中忽略底座与地基对井架振动的耦合作用，将导致工程上不允许的误差。
It is especially pointed out that ignoring the effect of coupling the base frame and the foundation with the mast will lead to errors that are not acceptable in engineering.
强调指出，在这种振动分析中忽略底座与地基对井架振动的耦合作用，将导致工程上不允许的误差。
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