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caulk welding
el.	塞焊焊缝; 塞焊
el.mach.	密实焊接
plast.	填缝焊接
caulk weld
bridg.constr.	填缝焊
met.	封口焊缝; 填隙焊缝
tech.	塞焊 (焊缝); 密实焊缝