In the large optical components topography measurement system, the accuracy of measurement is greatly related to laser spot segmentation, centroid extraction and back surface spot removal.

大口径光学组件面形检测系统中，激光光斑的分割、质心提取和背表面光斑的自动剔除算法关系到系统的检测精度。

youdao

In 1664 Hooke observed a reddish spot on the surface of the planet.

1664年，胡克观察到了那颗行星表面的一个微红的斑点。

《柯林斯英汉双解大词典》

The surface mark of an established plume is a hot spot—an isolated region of volcanoes and uplifted terrain located far from the edge of a surface plate.

一个已形成的烟羽的表面标志是一个热点——一个远离表面板块边缘的火山和隆起地形的孤立区域。

youdao

They also use radar to help spot oil just below the water's surface.

VOA: standard.2010.07.05

Someday, the Surface Pro will deserve a spot in a technology museum.

FORBES: Links 6 Feb: Microsoft's Surface Pro Reviews. Not So Good Actually

Researchers at his institute have devised a prototype vaccine that targets a vulnerable spot obscured by the surface of the virus.

FORBES: Outsmarting AIDS

Divers brought it to the surface and then took it to a spot off Kent, during a "delicate" seven-hour operation.

BBC: Huge explosion as experts detonate large WWII mine