More than 57 spectral lines have a power above 0.5 W at a single line.

单支输出功率在500mW以上的有57支谱线.

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The beginning of atomic physics is marked by the discovery and scrutinious study of spectral lines.

谱线的发现和深入研究标志着原子物理学的开端.

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So it is necessary to seek new theories to explain the spectral lines broadening of stars.

这样,寻求新的理论解释恒星光谱线的加宽成为必要.

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