on site damage costsone point methodone tailed testooliteoozeopaqueopen channelopen channel flowopen channel routingopen drainopen rangeopen structureoperatoroptical air massoptimal orderoptimization analysisoptimomizationoptimumoptimum aerator efficiencyoptimum aerator heihgtoptimum maximum angleorderorganicorganic contentorganic depositorganic farmingorganic fertilizerorganic soilorganizationorientationorientation of intakeorificeorifice meterorifice spillwayorograpgic rainorographicorographic cloudorographic precipitationorographic rainfallorographic vortexorographic windorohydrographyorometerorthogonalorthogonal contrastos=ose eskeroscillatingoscillating jumposcillationosmotic potential
