... 炮泥 bordering 钻孔岩样 bore plug 钻孔装药 borehole charge ...
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... 钻孔扫描器：borehole scanner 钻孔取样点位图：bore plug 钻孔潜望镜：borehole periscope ...
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... 法兰上钻孔取压的节流装置 throttling device with drilled holes on flange 孔取位 bore plug 射孔取心器 perforator coring device ...
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