... parallel hole connection ==> 炮孔并联 parallel hole drilling ==> 平行孔钻进 parallel homeomorphy ==> 平行同形 ...
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parallel hole drilling
平行钻孔
以上为机器翻译结果，长、整句建议使用 人工翻译 。
The grouting way comprises drilling hole, clamping the plug or burying the pipe, and configuring grouting devices, and grouting by a plurality of holes connected in parallel.
灌浆方法包括钻孔、卡塞或埋管、配置灌浆器具，然后采用多孔并联灌浆。
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