borehole jack
... anchor jack 支柱,撑柱 bore-hole jack 钻孔千斤顶(钻孔内荷载试验用的) bottle jack 瓶式千斤顶 ...
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对它们进行拆卸时经常要用到液压千斤顶，有时甚至还必须采用钻孔拆卸的办法。
Often, hydraulic jacks are required to remove the fitted bolts and sometimes they need to be drilled out.
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