The dynamic loads of engine in tractor-trailer unit are classified into four kinds with frequency structure.

拖拉机挂车机组工作时的动态载荷按其频率结构可分成四类。

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The dynamic loads of engine in tractor-trailer unit are classified into four kinds with frequency structure.

拖拉机挂车机组工作时的动态载荷按其频率结构可分成四类。

youdao