表面最大直径
The greatest surface diameter
茎直径最大日收缩量
stem diameter maximum daily shrinkage
牙轮最大直径
gauge tip diameter of the cone
大直径径向渗透率仪
full diameter radial permeameter
大直径直缝焊管
Large－ sized straight weld pips
large-diameter butt welded pipe
large diameter longitudinal welded pipe
Large-sized straight welded tube
大直径变截面桩
large diameter pile with variable cross-section
最大截面损失率
maximum loss ratio of sectional area
可关断最大电流
maxmum controllable current