It was then very popular to decorate lacquerware with gold and silver and embedding techniques were extensively used.
用金、银材料装饰漆器盛行一时，镶嵌技艺也被广泛地运用。
The research for digital watermarking is mainly divided into two branches, i. e. embedding techniques and attacking methods.
数字水印研究主要分为算法设计和攻击分析两个方面。
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