A laminated composite bar of rectangular cross section consists of a middle portion of one material as well as upper and lower identical cover plates of another material.
一矩形横截面的叠层复合材料杆，由以一种材料为中心部分，及另一种材料的上下两相同的盖板所组成。
2
The manufacturing technology, stress conditions, construction rules and reinforcement calculation of the laminated floor slabs with cold-rolled-twisted bar are investigated in this paper.