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energy principle
bridg.constr. 能量原理
energy principle: 49 phrases in 15 subjects
Architecture2
Artificial intelligence1
Aviation1
Bridge construction7
Chemistry1
Compressors1
Explosives and Explosive Ordnance Disposal4
General1
Geophysics1
Hydroelectric power stations2
Metallurgy1
Oil / petroleum1
Space3
Sports2
Technology21

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