单词 | sinking-and-walling scaffold |
释义 | sinking-and-walling scaffold [`siŋk·iŋ ǝn ¦wȯl·iŋ `ska´fōld] MINING ENGINEERING A platform designed for use in shaft sinking to enable sinking and walling to be performed simultaneously. Also known as Galloway sinking and walling stage. |
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