concrete tie混凝土轨枕concreteadj.具体的；实质性的；混凝土的n.水泥；混凝土；具体物v.凝结；结合concrete waterproofing混凝土防火性concrete-lined canal混凝土衬砌渠道concrete masonary unit混凝土砌块concrete proportioning混凝土配合concrete girder bridge混凝土梁式桥concrete specification混凝土规范concrete delivery pipe混凝土输送管concrete deterioration混凝土劣化concrete-timber pile混凝土木桩concrete grouting pile混凝土灌注桩