单词	back up coat
释义	back up coat 加固层
随便看	scale of horizontal equivalent scale of human resources scale of hydrographic survey scale of positions scale of preference scale of price scale of increase scale of intensity scale of inter-governmental transfer payment scale of investment scale of just temperament scale of land scale of land use scale of land-use scale of latitude scale of length scale of liability scale of living scale of living scale scale of longitude scale of market scale of marks scale of measurement scale of measurment scale of meter