8.1 The Basic Concepts of Groundwater 8.1.1 The Spaces and Moisture in Rocks 8.l.2 Recharge(补给)and Discharge（排泄) of Groundwater 8.1.3 The Physical Properties and Chemical Composition
8. 1 The Basic Concepts of Groundwater 8.1.1 The Spaces and Moisture in Rocks 8.1.2 Recharge（补给）and Discharge（排泄） of Groundwater 8.1.3 The Physical Properties and Chemical Composition
Key terms: groundwater:地下水 infiltrate::渗入 porosity:孔隙度 pore:孔隙 fissure(fracture):裂隙 cavity:溶穴
Key terms： groundwater: 地下水 infiltrate:渗入 porosity:孔隙度 pore:孔隙 fissure(fracture):裂隙 cavity:溶穴
permeability(渗透性) aquifer(含水层) aquitard(弱透水层、半隔水层) aquiclude(隔水层) spring(泉)
permeability（渗透性) aquifer（含水层） aquitard（弱透水层、半隔水层） aquiclude（隔水层） spring(泉)
recharge(补给) discharge（排泄) precipitaion(降水) combined water(结合水) gravitational water(重力水)
recharge（补给） discharge（排泄） precipitaion(降水） combined water(结合水） gravitational water(重力水）
(bi (a)Winter Park,Florida,sinkhole;(b)sinkhole lakes in central Florida,as seen from a high altitude
(a)Winter Park,Florida,sinkhole;(b)sinkhole lakes in central Florida,as seen from a high altitude