After the optimum design its sectional dimensions reduce obviously and its weight lightens obviously(23%).So it lightens its weight and savers its materials and reduces its cost.
英
美
释义
经过优化设计后,主梁的截面尺寸明显减小,总重量降低了约23%25,达到了减轻重量,节约材料,减少成本的目的。
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