吸きゅう収しゅう線せん

noun

absorption line

Technical term in physics, referring to a dark line in a spectrum caused by absorption of light at specific wavelengths.

• 太たい陽ようのスペクトルには多おおくの吸きゅう収しゅう線せんが見みられる。

  Many absorption lines can be seen in the solar spectrum.