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tapping hole
auto. 排泄孔; 放泄螺塞螺纹孔
met. 排出孔; 放出口; 出铁口; 出钢口; 放渣孔; 出渣口
tech. 放料口
wind. 螺纹孔; 螺丝孔; 侧压孔
tapping hole: 21 phrases in 3 subjects
Metallurgy14
Technology5
Thermal Energy2