covering letter (附于包裹或信件内用于说明或附言的)附信
covering power 遮力 protective covering 保护敷层;防护涂层;保护层
floor covering 地板;楼面面层 covering layer 保护层;层 wall covering 墙面涂料;墙面材料
the outer covering 外面物 covering machine 包线机
short covering 补进,抛空补回
covering surface 面 body covering 身体外层