基本解释[土木建筑工程]凸榫接雄榫接合词组短语短语cogged scarf joint 楔钉榫接Cogged d joint 凸榫接notched and cogged joint 槽口榫接cogged -scarf joint 雄榫斜嵌接合专业释义土木建筑工程凸榫接雄榫接合