multigrid tube英 [ˌmʌltɪˈgrɪd tjuːb]美 [ˌmʌltiˈgrɪd tuːb]【计】多栅管计算机双语例句A multigrid calculation for the two-dimensional supersonic flow in an angle-shaped tube二维折角管道内超声速流动的多重网格计算