| 单词 | principal point |
| 释义 | principal pointnoun Optics.the point where a principal plane intersects the axis. Origin of principal pointFirst recorded in 1695–1705 Words nearby principal pointprincipally, principal nursing officer, principal optic axis, principal parts, principal plane, principal point, principal quantum number, principal rafter, principal value, principate, Príncipe Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020 Medical definitions for principal pointprincipal point n.One of the two points in an optical system where the axis is cut by the two principal planes. Lines drawn from these to corresponding points on the object and the image will be parallel. The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company. |
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