水痕,水斑(陶瓷、搪瓷缺陷);水印,罗纹;水线[水位]标志

water mark的用法和样例：

例句

We use the two keys to extract the water mark to authenticate the image.认证时使用这两个密钥来恢复水印信息。
While inserting the semi-fragile mark, the key is also robustly embedded into the host.在水印数据半脆弱地嵌入载体信息的同时，密钥也被稳健地隐藏在载体信息中。

词汇搭配

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