1) extra-axial point
轴外点
2) axis-beyond object point
轴外物点
1.
Lens equation of axis-beyond object point is derived by Fermat s principle, the process of derivation indicates clearly that near axial conditions are necessary and sufficient conditions of ideal image formation.
用费马原理推导透镜对轴外物点的物像公式,推导过程清楚表明近轴条件是理想成像的充分必要条件。
3) field ray
轴外物点光线
4) double row angular contact ball bearin gvertex of contact angles outside of ～
接触角顶点在轴承外的球轴承
5) Point-aixs
点轴
6) extra-axial
轴外
1.
Objective: To study the imaging features of extra-axial tumors and tumor-like lesions involving both middle and posterior cranial fossae and to make a classi?cation.
目的提高对跨中、后颅窝轴外肿瘤及肿瘤样病变的影像学认识。
补充资料：点轴开发
n就是在全国或地区范围内，确定若干具有有利发展条件的大区间，省区间，线状基础设施轴线，对轴线地带的若干点市进行重点发展。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条