无位移谱线的英文

stationaryline

• 无:    not have; there is ...
• 位移:    displacement; shif ...
• 谱:    table; chart; regi ...
• 线:    thread; string; wi ...

例句与用法

1. These fixed lines have been called stationary lines .
   这两条固定不动的谱线叫做无位移谱线。