Fixed entrance and exit slit.

固定出口和入口狭缝。

youdao

Entrance slit and the grating are fixed and the exit slit scans across the Rowland circle.

入射狭缝及光栅固定起来，出射狭缝扫描过罗兰圆。

youdao

Entrance slit and the grating are fixed and the exit slit scans across the Rowland circle.

入射狭缝及光栅固定起来，出射狭缝扫描过罗兰圆。

youdao