求翻译：摘要:应用ANSYS有限元方法，对叉车车架实施模态分析，经扩展提取其低阶模态，然后针对叉车行驶路况和所用发动机，根据有关理论，计算确定相应的激励频率。通过分析对比，对某叉车车架动态性能提出改进措施，以便有效降低车架的振动响应，提高叉车的驾驶平顺性和舒适性。是什么意思？

Abstract: The ANSYS finite element method, modal analysis of the implementation of truck frame, the expansion of extraction of the lower mode, and then for the road conditions and driving the forklift engines, according to the theoretical calculation to determine the appropriate excitation frequency

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Abstract: Using the ANSYS finite element method, to the forklift frame implementation modality analysis, withdraws its low-order modality after the expansion, then and uses the engine in view of the forklift travel state of roads, according to the related theory, the computation determines the corre

Summary: the application of ANSYS finite element methods, implementation on forklift frame modal analysis, extraction expanded its lower order modes, and then for forklift driving traffic, and the engine, according to some theories, determined the appropriate stimulation frequency. By comparison, on

Summary: the application of ANSYS finite element methods, implementation on forklift frame modal analysis, extraction expanded its lower order modes, and then for forklift driving traffic, and the engine, according to some theories, determined the appropriate stimulation frequency. By comparison, on