英语词汇“pilot hole of shaft, test hole of shaft”的翻译、意思、用法、释义-英汉汉英双解词典-爱贷网

词汇	pilot hole of shaft, test hole of shaft
释义	pilot hole of shaft, test hole of shaft 井筒检查孔；新井开凿前；为核实井筒剖面资料,编制施工设计方案,在井筒附近追加施工的钻孔。
随便看	track jamming track j-horner track joining track joist track judge track junction track-keeping track-keeping control track kerning track kilometrage track kinetics track label track laborer tracklane track lanes track last reference position tracklayer track layer track-layer tracklayers tracklayer tractor track layer tractor tracklaying track laying track-laying