A frame of the commercial vehicle comprises a front cross-member (2) for the connection of two longitudinal-members (3).
商用汽车的车架，包括用于连接两个纵梁(3)的前横梁(2)。
That horizontal member of the portal frame consists of two longitudinal pre-stressed concrete box type beams overpassing the big span.
两个箱型梁水平构件构成了教室与展区的天花板及地板，并在理论教室和展示区的配置考量下而设计成不同的高度。
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