The size and position of the cross section of support beam, the opening direction of beam channel.

表面处理形式、状态；支撑梁的截面尺寸和位置，槽钢的开口方向。

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So the rational position of cross beam is determined to ensure the highest strength and stiffness of boom and the most rational design of boom structure.

因此，合理确定横梁安装位置而使动臂的强度、刚度最大，对动臂结构的合理性尤为重要。本。

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So the rational position of cross beam is determined to ensure the highest strength and stiffness of boom and the most rational design of boom structure.

因此，合理确定横梁安装位置而使动臂的强度、刚度最大，对动臂结构的合理性尤为重要。本。

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