Structure through strict design and calculation, the security, stability, the crosssectionform, used for bank slope, embankment and subgrade protection project.
该结构经严格设计计算，形成安全、稳定的断面形式，用于岸坡、堤防、路基等防护工程。
2
the use of optical vortex beams with a doughnut-like shape in the cross-section to form an optical vortex pipeline;
运用了截面为甜甜圈状的涡流光束形成的光涡流通道；
3
It is a key factor for large crosssection box culvert to form good slurry sleeves.