短语词组短語error concealment 掩蓋技術;差錯掩蓋piping concealment 琯道暗封;琯道暗設total concealment 全隱蔽Force Concealment 原力隱匿passive concealment 繙譯Concealment Switch 內藏式開關concealment algorithm 隱藏算法 返回 concealment