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地形起伏 dìxíng qǐfú
agric. ruggedness of relief
oil relief; topographic irregularity
tech. hypsography; land wave; topographical relief; undulation
wind. topographic relief
地形起伏: 36 phrases in 14 subjects
Automobiles1
Construction2
Desert science2
Drilling1
Earth sciences1
Electronics1
Engineering geology4
Explosives and Explosive Ordnance Disposal1
General2
Oil / petroleum5
Skiing1
Space1
Technology12
Wind Energy2