upside-down installation method
upside-down installation method
倒置安装法
以上为机器翻译结果，长、整句建议使用 人工翻译 。
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Hydraulic lifting upside-down method is advanced for the internal steel stacks' installation, and it was firstly invented inland.
液压提升倒装法是一种先进的多管式烟囱钢内筒安装方法，属国内首创。
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