The analytical conditions were optimized and the best spectrumlines were selected.
优选出最佳仪器工作条件和被测元素分析谱线。
2
These low frequency spectrumlines are basically the harmonics of the rotor shaft frequency and the blade-passing frequency.
并且这些低频线谱基本上都是转子轴频和叶频的谐波分量。
3
For example, trained observers obtain a very large amount of information about a star mainly from the accurate analysis of the simple lines that appear in a spectrum.