1) aplanatic focus
等光程焦点
2) Aplanatic Points
等光程点
3) equivalent focus
等效焦点
4) curriculum focal points
课程焦点
1.
It lists the curriculum focal points in every grade from pre-kindergarten to grade 8,which attaches great importance to the foundation of mathematics education and is similar to the"Two Foundation"of mathematics in China.
全美数学教师理事会(NCTM)于2006年9月12日发布了《幼儿园学龄前到八年级数学课程焦点:寻求一致性》,其中列出的从幼儿园学龄前到8年级每个年级的数学焦点,充分表现出对数学教育的基础性的关注,这与我国的"数学双基"颇为相似。
5) focal eikonal
焦点程函
6) laser focus position
激光焦点
1.
The most popular detection methods both at home and aboard are introduced,and a method on the position control system for beam focus is presented during laser beam cutting process based on CCD,which can accurate detect and control the laser focus position during laser beam cutting process by using the laser triangulation and CCD imaging system coordination digital image proce.
激光焦点位置的检测与控制是激光切割系统中的关键技术之一。
补充资料：X线管的焦点
X线管的焦点
放射学术语。X线管内X线的发源点，即X线管阳极，接受电子撞击并产生X线的部位。X线管阳极的焦点并非为一个无限小的点，而是具有一定几何学的面积，故又称焦点面。由于X线管阳极靶面实际接受电子撞击的面积与其参与X线几何投影的有效面积不同，故焦点有实际焦点
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