猫眼光栏的方形光孔成象太大。
The quadratic aperture of the cat 's-eye diaphragm is imaged too large.
该镜架对通光孔的遮挡最小，结构简单，成本低廉。
The mirror holder shields the light through hole least. Theholder is constructed simple and cost low.
为了减小样品上的温度梯度，台体上的光孔直径只有2.5毫米。
To minimise the temperature gradient across the sample, the light aperture in the block is only2.5 mm?.
应用推荐