bottom side bearing box是什么意思，bottom side bearing box的翻译，bottom side bearing box音标、读音、用法和例句

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bottom side bearing box是什么意思，bottom side bearing box的翻译，bottom side bearing box音标、读音、用法和例句_94生活常识网有道词典

bottom side bearing box

基本解释

专业释义

交通運輸工程