基本解释[教育学]双面焊缝接口词组短语短语double fillet welded t joint 详细翻译;双面丁字形焊接double fillet welded lap joint 双面对焊接double fillet welded T -joint 双面丁字形焊接double fillet welded joint更多词组专业释义教育学双面焊缝接口