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三角学 sānjiǎoxué
agric. trigonometry (trigonometria)
hydroel.st. trigonometry
三角学〔的〕 sānjiǎoxué
gen. trigonometry
三角 学: 18 phrases in 8 subjects
Aviation1
Desert science1
Electronics1
General2
Hydroelectric power stations3
Metallurgy1
Nursing1
Technology8