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test frequency
busin. 检验频率
met. 测试频率
tech. 试验次数
test frequency
: 59 phrases in 17 subjects
Animal husbandry1
Aviation7
Compressors1
Electric machinery4
Electric motors1
Electronics14
Explosives and Explosive Ordnance Disposal1
Geophysics2
Hydroelectric power stations1
Information technology1
Metallurgy3
Shipbuilding1
Space6
Sports1
Technology13
Water resources1
Wind Energy1

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