technetium star

短语

词形变化

technetium stars 复数 technetium stars

释义与例句

n.
  1. 1.

    A star in which technetium has been detected. Technetium is too short-lived to occur primordially in the star, if the star is about 4.5 billion years old (the estimated age of the Earth), so the star must be producing technetium.

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