名詞 base metal:

1. a metal that is common and not considered precious

1. A base metal.
   一塊不純的金屬
2. A medieval chemical philosophy having as its asserted aims the transmutation of base metals into gold, the discovery of the panacea, and the preparation of the elixir of longevity.
   煉金術，煉丹術中世紀的一種化學哲學。其聲稱的目標是將一些基本金屬轉變?yōu)榻鹱樱l(fā)現(xiàn)萬靈藥及制備長生不老藥
3. The supposed conversion of base metals into gold or silver in alchemy.
   轉變在煉金術中假想的從賤金屬到金或銀的轉變
4. The relative degree of mixture with a base metal; fineness.
   成色，純度和基本金屬的相對混合程度; 純度