详细解释:n. 水文学, 水道测量术
词型变化：
名词复数:hydrographies副词:hydrographically形容词:hydrographic名词:hydrographer英语解释：
名词 hydrography:
the science of the measurement and description and mapping of the surface waters of the earth with special reference to navigation详细解释：
hy.drog.ra.phy
n.（名词）【复数】 hy.drog.ra.phies The scientific description and analysis of the physical conditions, boundaries, flow, and related characteristics of the earth`s surface waters.水文地理学：对地球表面上的水的物理状态、边界、流动及相关特征进行的科学描绘、分析的一种科学The mapping of bodies of water.给水体做地图
【引伸】
hydrog.rapher
n.（名词）hy.drograph.ic
hy.drograph.ically
adv.（副词）