| 释义 |
ap·o·chro·mat·ic
\|apəkrō|mad.ik\ adjective
Etymology: International Scientific Vocabulary apo- + chromatic
: free from chromatic and spherical aberration — used of a lens in which rays of three or more colors are brought to the same focus, the degree of achromatism thus obtained being more nearly complete than where two rays only are thus focused |