Mining. The charge of powder sufficient for a blast in a mine (esp. a coal-mine); also the bored hole into which the charge is put.
单词 | θ217120 |
释义 | society > occupation and work > materials > derived or manufactured material > explosive material > [noun] > quantity used in blasting operation > charge (7) shot1849 Mining. The charge of powder sufficient for a blast in a mine (esp. a coal-mine); also the bored hole into which the charge is put. sumper1881 A hole made in or near the bottom of a shaft during its sinking; a blasting charge creating such a hole. raker1883 Mining. Each of a number of shots (blasting charges) positioned next to a sumper. Obsolete. rare. shaped charge1948 an explosive charge having a cavity which causes the blast to be concentrated into a small area. Subcategories:— material for tamping charge (2) — cartridge (1) |
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