大口径低转速泵
pump with large-diameter and low speed
低速大转矩
Low-speed high-torque
Low-speed and high-torque
Low speed and high torque
大直径转孔灌注桩
large diameter bored piles
大直径转轴
heavy section turning axle
螺桨转速
propeller speed
revolution speed of propeller
大直径径向渗透率仪
full diameter radial permeameter
大直径螺旋焊管
large-diameter spiral welded pipe
大直径螺旋钻孔桩
large diameter bored pile
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
低怠速转速调整
low idle speed adjustment
低速大功率柴油机
low speed high power diesel engine
低速大扭矩
Low speed and high torque
basic theoretic class