词汇	acid gangue
释义	acid gangue 酸性脉石
随便看	principal point the frame principal point trangulation principal point traverse principal point triangulation principal polarizabilities principal polarization plane principal pollutant Principal pollution principal polygonometric network principal polygonometrlc network principal port principal portion principal radius principal radius of curvature principal rafter principal position principal post principal power principal pressure Principal Priority Officer principal problem principal problem of dynamics principal problems principal produce principal product