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preboring v
bridg.constr. 预钻
eng.geol. 预钻孔; 預鑽樁孔
tech. 预钻钉眼; 初步钻探; 钻导孔; 打导洞; 预先钻探
prebore ['priː'bɔː] v
gen. 预先钻孔〔穿孔〕; 初步钻探; 初钻 (勘)
prebored v
eng.geol. 预钻孔
preboring: 9 phrases in 2 subjects
Rail transport1
Technology8

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