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

box timbering n. Mining (now rare) the action of lining a shaft with frames constructed from planks; the timber used to support the sides of a shaft or roof of a passage.

ΚΠ

1881 Trans. Amer. Inst. Mining Engineers 1880–1 9 111 Box-timbering, see Plank timbering.

1911 Engin. Rec. 23 Dec. 728/1 This drift required full box timbering and breast boards with straw packing, and progress was very laborious.

1940 Barrier Miner (Broken Hill, Austral.) 7 Dec. 7/3 The now abandoned main shaft extending to No 14 level, 16ft. by 6ft., with five compartments and box timbering.

1982 M. Drinkwater Hill End Gold iv. 82 Vertical shaft sinking requires box timbering or pig sty sets.

单词	box timbering
释义	> as lemmas box timbering box timbering n. Mining (now rare) the action of lining a shaft with frames constructed from planks; the timber used to support the sides of a shaft or roof of a passage. ΚΠ 1881 Trans. Amer. Inst. Mining Engineers 1880–1 9 111 Box-timbering, see Plank timbering. 1911 Engin. Rec. 23 Dec. 728/1 This drift required full box timbering and breast boards with straw packing, and progress was very laborious. 1940 Barrier Miner (Broken Hill, Austral.) 7 Dec. 7/3 The now abandoned main shaft extending to No 14 level, 16ft. by 6ft., with five compartments and box timbering. 1982 M. Drinkwater Hill End Gold iv. 82 Vertical shaft sinking requires box timbering or pig sty sets. extracted from boxn.² < as lemmas
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> as lemmas