backflow connection〔名词〕交叉接合,十字接头,回流管详细»
backflow connection〔名词〕回流管详细»
十字接头cross connection;cross joint;four way box详细»
十字接头cruciform joint;four-way union详细»
十字接头cruciform joint;four way box;four waytube box;pipe cross详细»
十字接头cross;cross connection;cross joint;cruciform joint;four-way tube box详细»