有效: effective; valid; efficaciou ...水封: water block; water closing; ...有效水: available water净有效水头: available net head; net available head; net effective head土壤有效水: soil available water有效水分: available moisture capacity; available water; chresard; effective moisture有效水份: available moisture; readily available water有效水量: chresard有效水流: effective current flow有效水平: effect level; significant level有效水容量: available water capacity有效水深: available depth; effective depth有效水头: acting head; active head; available head; available hydraulic head; effective head有效水压头: available pre ure head; available pressure head总有效水头: gross available head生理有效水分: physiological available water土壤有效水分: available moisture of the soil; available soil moisture有效水分贮量: productive moisture reserve最高有效水量: field capacity有效落差, 有效水头: effective head有效水保持能力: available water holding capacity有效水动力弥散系数: effective hydrodynamic dispersion coefficient水封: [油工] water block; water closing; water lute; water seal◇水封爆破 waterinfusion blasting; 水封槽 water sealed tank; 水封储气器 water-sealed gas holder速效水: readily available water无效水: non available water; unavailable soil water; unavailable water; unavialable water