大直径径向渗透率仪
full diameter radial permeameter
大直径直缝焊管
large diameter longitudinal welded pipe
large-diameter butt welded pipe
Large-sized straight welded tube
Large－ sized straight weld pips
4根直径2300mm靠船桩
mooring piles with a diameter of 2300 mm each
Sauter平均直径
sauter mean diameter
alternating and direct current desalting
按喉管外直径而定
According to pipe outside diameter