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archit. 双头式
tech. 大头T形管; 堤岸; 挡土水墙; 圆头丁砖; 平板箱形孔型; 双头式 (大圆头); 露顶侧砖; 小圆头
bull head
: 16 phrases in 3 subjects
Architecture2
Rail transport1
Technology13