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单词	double-lock seam
释义	double-lock seam double-lock seam double-lock seam A type of seam between the edges of adjacent metal sheets; formed by making a double fold, then dressing down to form a seam.
随便看	gvbf gvb-init gvbl gvbln gvb-mdsa gvboa gvbp gvb-pp gvbr gvbs gvc gvca gvcac gvcb gvcbl gvcc gvccc gvccu gvcd gvcf gvch gvchs gvci gvcip gvcl

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