Coddington magnifier

短语

词形变化

Coddington magnifiers 复数 Coddington magnifiers

释义与例句

n.
  1. 1.

    A magnifying glass consisting of a single thick lens with a central deep groove diaphragm at the equator, limiting the rays to those close to the axis and minimizing spherical aberration.

词源

Popularized and refined by Henry Coddington.

来源：wiktionary