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Terms for subject General containing 封层 | all forms
ChineseEnglish
中层领主的封地〔采邑,身份〕mesnalty
圆筒顶部封闭的防护层top-hat shielding
封闭层防剥离剂desealant
未封闭的壳层open shell
煤层上下的直封印木化石cauldron