pyrophoric alloy
Nonstandard spelling of there.
present participle of sell off
Relating to an endogenous retrovirus
An alloy, especially one of iron or cerium, that emits sparks when scratched or struck.
現地試験中、擦ると火花を出す合金は、技術者の工具が表面を擦った際に鮮やかな火花を散らした。
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