the measurement of specific gravity 同义词：gravimetry,
Hydrometry is the monitoring of the components of the hydrological cycle including rainfall, groundwater characteristics, as well as water quality and flow characteristics of surface waters.Wubbo Boiten, Hydrometry, Francis and Taylor publishers.
Hydrometry - specification for a reference raingauge pit 流速测量.标准量雨槽规范
Standard for terms and symbols used in hydrometry 水文基本术语和符号标准
Hydrometry - specification for a reference raingauge pit 液体比重测定.基准雨量规槽规范
Hydrometry - measurement of discharge by the ultrasonic acoustic method 水文测量.用超声
Hydrometry - field measurement of discharge in large rivers and rivers in flood 水文测量.大河和洪水流量的野外测量
Hydrometry - the application of propeller - type current meters and their calibration ; german version env 14028 : 2001 流速测量.螺旋式电流计的使用及校准