单词 | wad |
释义 | wad [wäd] MINERALOGY A massive, generally soft, amorphous, earthy, dark- brown or black mineral composed principally of manganese oxides with some other minerals, and formed by decomposition of manganese minerals. Also known as black ocher; bog manganese; earthy manganese. ORDNANCE A felt or cardboard pad used to secure the propellant in place in cartridges. Also known as wadding. |
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