船首线向上的平面位置指示器
heading upward plan position indicator
垂直上向深大孔
Vertical upward large diameter long holes
垂直向上流动通道
Vertical upward flow channel
地面向上长波辐射
surface upward longwave radiation
反向上下解
counter upper-down solution
高压向上液流
high pressure upstream oil
激光铅垂仪向上投点方案
laser plummet apparatus upward point method