1. 结壳：encroachment 入侵 | encrustation 结壳 | end 工祖

2. 结壳;被壳：结壳 incrustation | 结壳;被壳 encrustation | 结壳假像 incrustation pseudomorph

3. 结壳,外层,外壳：Emulsion 乳化液 | Encrustation 结壳,外层,外壳 | Entablature 支柱,机架

4. 外壳;硬壳：Dualism 二元性;两重性 | Encrustation 外壳;硬壳 | Engender 产生;造成

noun

1. a decorative coating of contrasting material that is applied to a surface as an inlay or overlay

Synonym: incrustation

2. a hard outer layer that covers something

Synonym: crustincrustation

3. the formation of a crust

Synonym: incrustation