词汇	concentric valve
释义	concentric valve 同心阀
随便看	building daylight building daylighting Building decorating and repairs engineering building decoration building decoration and fitment Building Decoration Company building decoration engineering company building decoration industry building decoration materials building decoration project building defect building defenee building deficiency building defilade building deformation measurement building delivery and life cycle Building demolishing building demolition building demolition in the city building density building department building department cost building department costs building departments building depreciation reserve