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;
2
By using Optical Microscope (OM) and Scanning Electron Microscope (SEM), the structural features of crosssection, interior and exterior surfaces for wheat straws were observed and analyzed.
利用光学显微镜(OM)和扫描电镜(SEM)对麦秆横切面、内、外表面的组织结构进行了观察和分析。
3
The crosssection areas of overhead optical cable reinforcing materical are calculated for a big span.