DictionaryForumContacts

   Chinese
Terms for subject Technology containing 拱心 石 | all forms | in specified order only
ChineseEnglish
带榫的拱心石toed keystone
拱心石key-stone
拱心石arched keystone
拱心石keystone layer
拱顶中心石key stone
有楔形拱心石的手拱Welsh arch