流速测杆
surveying rod for current velocity
测速测距
Speed and distance measurement
双层测杆测孔
hole measuring by double deck boning rod
微波测速测距
relative velocity and distance survey by microwave
CheckLight AOC快速测定仪
checklight AOC rapid determination analyzer
CO2速测管法
CO2 fast detecting tube method
COD(cr)快速测定法
COD(cr) fast measuring method
CODcr快速测定法
CODcr fast measuring method
GPS差分测速
GPS differential velocity determination
GPS单点测速
GPS absolute velocity determination
LDV测速原理
LDV velocity measurement theory