masking

He is good at masking his real character behind an assumed manner.

他善于用伪装的举止来真正的性格。

It is taking hychroperoxides as masking agents, alumnium in titanium alloys was meascred with aluminon ammonium aurintri-carboxylate.

研究了以过氧化氢作为蔽剂,用铝试剂测定钛合金中铝的方法。

If the hair graying is inreversible, hair colorant is the main choice for the masking of hair color change.

在无法逆转头发变灰的情况下，着色剂是恢复头发颜色的主要方法。