Hydrozoan.[动]水螅纲
hydron.水疗院;水力电pref.表示“水的”、“氢的”
hydrocephalus ex vacuo脑外积水
hydrographic frequency水文频率
hydrological data unit水文信息单元
hydrofracturing method水压致裂法
hydrolyzation reaction水解反应
hydrogeology character煤层
Hydro-power Stations水电站群
hydrogeological survey水文地质甸
hydrostatic assumption流体静力学假设
hydroelectric facility水电设备