英语语法分析

The latest development of photometric analysis of vanadium was discussed.

论述了钒的光度分析的进展状况。

There will be photometric and spectroscopic evidence for forests and savannahs.

通过光度与光谱证据，也许还能发现森林和草原的痕迹。

Photometric sensors are devices that measure energy in the visible spectrum .

测光传感器是测定可见光谱中能量的仪表。