coverlay覆盖膜
covern.封面;盖子;套子;表面v.覆盖;涉及;包含;掩护;给…保险
covering roller覆土压土轮
Cover technique覆盖栽培
cover annealing罩式炉退火
covering thread包覆线
cover by patrol巡逻保护
covering report[法] 总结报告书
cover aggregate盖面集料
covering season繁殖季节
covering bottom翻掩犁体
cover for a pan锅盖