bottom half inner casing是什么意思，bottom half inner casing的翻译，bottom half inner casing音标、读音、用法和例句

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bottom half inner casing是什么意思，bottom half inner casing的翻译，bottom half inner casing音标、读音、用法和例句_淳朴汉英词典

bottom half inner casing

基本解释

专业释义

材料科學