hyperboloid造句
Windloadingonahyperboloidroofofastadiumwasconductedbymeansofwindtunneltest.Theceilingsystemshouldsatisfytheserequirementsthatusinglowerchordballasfixedpoint,adaptingspacechangeofhyperboloidsteelgrid,g...
Windloadingonahyperboloidroofofastadiumwasconductedbymeansofwindtunneltest.Theceilingsystemshouldsatisfytheserequirementsthatusinglowerchordballasfixedpoint,adaptingspacechangeofhyperboloidsteelgrid,g...