题目内容

在进行光谱定性分析时,狭缝宽度宜______ ,原因是______ ;而在定量分析时,狭缝宽度宜______ ,原因是______ 。

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用刻有2000条/mm的光栅来色散Li的460.20 nm和460.30 nm两条谱线(一级谱线),则光栅的分辨率和宽度分别为______ 和______ 。

对一块宽度为50.0 mm,刻线数为1200 条/mm的光栅,它的一级光谱的分辨率为______ ,在6000 埃附近能分辨的两条谱线的波长差为______ 。

光谱分析法与其他分析法的不同点在于光谱分析法涉及 ( )

A. 试样通常需要预处理以消除干扰组分
B. 光电效应、波长
C. 复杂组分的分离和两相分配
D. 辐射光与试样间的相互作用与能级的跃迁

Which of the following descriptions of the adiabatic radiation surface is wrong?

A. The net radiative heat flux on the adiabatic radiation surface is 0
B. An adiabatic radiation surface can be regarded as a surface with its reflectance of 1
C. The surface temperature of the adiabatic radiation surface is affected by the radiation network system that it participates in
D. The surface temperature of adiabatic radiation surface has a certain influence on the heat transfer of the radiation network system that it participates in

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