Anh
secular variation
secular trend
secular trend in climate
Đức
säkulare Variation
Säkularänderung
Pháp
variation séculaire
variation séculaire /SCIENCE/
[DE] säkulare Variation
[EN] secular variation
[FR] variation séculaire
variation séculaire /ENVIR/
[DE] Säkularänderung
[EN] secular trend; secular trend in climate