4根直径2300mm靠船桩
mooring piles with a diameter of 2300 mm each
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
RF-Ⅱ椎弓根系统
RF-Ⅱ pedicle serew system
半单李代数的根系
root system of a semi-simple Lie algebra
鞭根系统分析
analysis on system of rhizome and root
不同苗龄的向日葵根系
sunflower root systems with different ages
部分根系施肥
Partial-roots fertilization