| 单词 | Welsbach burner |
| 释义 | Welsbach burner /welz"bak, -bahk/; Ger. /vels"bahkh/, Trademark. a brand of gaslight consisting essentially of a Bunsen burner on which an incombustible mantle (Welsbach mantle) composed of thoria and some ceria becomes brilliantly incandescent when exposed to flame. |
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