By shining laser light onto hydrogen or antihydrogen and observing which wavelengths are absorbed, the energy levels of the two can be compared in detail.
用激光照射氢原子或反氢原子，观察何种波长的光线被吸收了，可以通过这种办法来详细地比较这两种原子的能级。
The optical system of the flame-observing tube is discussed in detail and the result of the optical system design with a turning angle prism is given in this paper.
在本文中，对火焰观测仪的光学系统作了详细讨论，并给出带有转角棱镜的光学系统设计的结果。
Methods of distinguishing the first order diffraction spectrum from other order one have been described in detail by observing half- widths, locations and intensities of the spectrum.
提出了用峰位、半峰宽和峰高和滤光法来鉴别各级光谱的方法。
Methods of distinguishing the first order diffraction spectrum from other order one have been described in detail by observing half- widths, locations and intensities of the spectrum.
提出了用峰位、半峰宽和峰高和滤光法来鉴别各级光谱的方法。
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