covertadj.隐蔽的;偷偷摸摸的;隐密的n.掩蔽物;树丛;覆羽
covert land market无形市场
Covert channel mark隐蔽通道标识
covert conditioning内隐条件法
coverter steel slag转炉钢渣
Covert Strike Radar隐蔽进攻雷达
covert trade barrier变相贸易壁垒
covert reinforcement内隐强化法
covert extended time隐性超期
covert randomization隐秘的随机化
covert sensitization隐蔽性敏感化作用