| 单词 | wedging joint |
| 释义 | > as lemmaswedging joint attributive, as wedging joint; wedging crib n., wedging curb n. Mining (see crib n. 12 and curb n. 10). ΘΚΠ society > occupation and work > equipment > mining equipment > [noun] > pit supports yoking1653 set1830 crib1839 tub1839 wedging crib1839 cribbing1841 ring crib1849 tack1849 tymp1883 1839 A. Ure Dict. Arts 972 Three kinds of cribs are employed; called wedging, spiking, and main cribs. 1839 A. Ure Dict. Arts 973 The flange for the wedging joint is best turned inwards. 1881 Trans. Amer. Inst. Mining Engineers 1880–1 9 190 Wedging-curb or Wedging-crib, Eng. A curb used to make a water-tight packing between the tubbing in a shaft and the rock-walls, by means of split deals, moss, and wedges, driven in between the curb and the rock. < as lemmas |
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