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to phrases
square edge
el. 焊接平面焊口
met. 直边; 焊管坯未切斜的直边
plast. 平面焊口
tech. 方边; 直角边缘; 直角边
square edge: 12 phrases in 4 subjects
Hydroelectric power stations1
Metallurgy1
Technology7
Textile industry3