英语词汇“working headway”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

> as lemmas

working headway

working headway n. Mining a headway (headway n. 2) in which mining is being carried out.

ΚΠ

1835 J. Holland Hist. & Descr. Fossil Fuel, Collieries, & Coal Trade xi. 222 Rendering it nearly impossible for the workmen to prevent its exploding at their lights as they pass and repass along the working headways.

1855 D. T. Ansted et al. Geol., Mineral. & Crystallogr. 242 Running a gallery..above the working headway to the highest place worked.

1917 Ironwood (Mich.) Times 31 Mar. 1/2 Working headways are turned off in pairs, driven ‘narrow’ 75 feet from the slope, and a manway raised for ventilation.

extracted from workingn.

as lemmas

单词	working headway
释义	> as lemmas working headway working headway n. Mining a headway (headway n. 2) in which mining is being carried out. ΚΠ 1835 J. Holland Hist. & Descr. Fossil Fuel, Collieries, & Coal Trade xi. 222 Rendering it nearly impossible for the workmen to prevent its exploding at their lights as they pass and repass along the working headways. 1855 D. T. Ansted et al. Geol., Mineral. & Crystallogr. 242 Running a gallery..above the working headway to the highest place worked. 1917 Ironwood (Mich.) Times 31 Mar. 1/2 Working headways are turned off in pairs, driven ‘narrow’ 75 feet from the slope, and a manway raised for ventilation. extracted from workingn. < as lemmas
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