资料来源 : pyDict

比较仪

资料来源 : Webster's Revised Unabridged Dictionary (1913)

Comparator \Com"pa*ra`tor\ (? or ?), n. [L., a comparer.]
   (Physics)
   An instrument or machine for comparing anything to be
   measured with a standard measure; -- applied especially to a
   machine for comparing standards of length.