等: class; grade; rank时: shí]历: experience线: thread; string; wire等时: equitime; isochronic; waiting水历线: hydrograph比利时历史: history of belgium单位历线法: unit graph method; unit hydrograph method单位水历线: unit hydrograph洪水历线: flood hydrograph三角形历线: triangular hydrograph单位历线综合: unit hydrograph synthesis life合成单位历线: synthetic unit hydrograph等时摆: isochronous pendulum等时代: time equivalence等时的: isochronal; isochronous等时点: equal time point (etp)等时计: isochronograph等时面: equivalent time horizons; isochronous surface等时图: isochron chart; isochronograph等时线: hour-out line; isochronal line; isochrone; isotime; synchrone; time lines等时性: isochroneity; isochronism; tautochronism等时仪: isochronograph等时值: isochroism; isochronia方等时: the third of the five periods of tiantai
