| 单词 | rope boring |
| 释义 | > as lemmasrope boring rope boring n. the boring of wells or shafts using a drill suspended and worked by means of a rope. ΘΚΠ society > occupation and work > industry > mining > [noun] > other specific mining processes gadding1753 costeaning1778 refinement1815 rope boring1852 piping1869 chlorination1875 opencasting1886 resue1903 resuing1905 biomining1982 1852 W. W. Smyth in Rec. School of Mines & Sci. appl. to Arts I. i. 117 The Chinese well-borers..have succeeded..in attaining the extraordinary depth of 3,000 feet, by their simple and inexpensive apparatus of rope-boring. 1888 Chambers's Encycl. II. 331/2 The rope-boring machinery of Mather and Platt of Salford..is in extensive use. 2005 R. D. Singh Princ. & Pract. Mod. Coal Mining iii. 76 Rope boring was widely used for oil well drilling in which they raised a heavy blunt chisel type of bit jumping on the end of a cable. < as lemmas |
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