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周期变化 zhōuqī biànhuà
bridg.constr. cyclic variation
ecol. periodical change
eng.geol. cyclical variation
met. cycling
meteorol. intermittent variations
space period variation; periodic change; periodic variation
tech. aspection
wind. period change
周期变化
tech. cyclic variation; cyclical variation; periodic change; periodical change
周 期 变化: 99 phrases in 25 subjects
Agriculture2
Air defense1
Architecture1
Aviation1
Business2
Desert science1
Earth sciences2
Ecology1
Economy2
Electricity generation1
Electronics6
Engineering geology3
General8
Hydroelectric power stations2
Materials science1
Metallurgy4
Nautical2
Oil / petroleum2
Polymers1
Securities1
Shipbuilding1
Space3
Technology49
Telecommunications1
Wind Energy1