built-up fixture是什么意思 built-up fixture在线中文翻译

built-up fixture是什么意思，built-up fixture在线翻译，built-up fixture中文意思，built-up fixture的中文翻译，built-up fixture发音，built-up fixture例句，built-up fixture词组短语，built-up fixture怎么翻译，单词built-up fixture的意思