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mercury arc lamp
el. 汞弧灯
eng.geol. 水银弧光灯
shipb. 汞弧灯水银灯; 水银灯
tech. 汞孤灯
mercury-arc lamp
archit. 水银弧光灯
tech. 汞弧灯; 水银弧光
mercury -arc lamp: 9 phrases in 3 subjects
Electronics2
Metallurgy1
Technology6