periodic comet

名词 n.
中文释义

英文释义

名词 n.
  1. A comet which orbits the Sun and which returns to the innermost point of its orbit at known, regular intervals.
    — The computation of the elements of its orbit reveals the fact that they are almost identical with those of Comet III, 1869, and hence it becomes what in astronomical language is called a periodic comet.

词形变化

periodic comets plural periodical comet alternative
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