带状光谱由一组波长组成，它们密集在一起，许多线看起来就像是一条连续的带。
A band spectrum consists of groups of wavelengths so close together that the lines appear to form a continuous band.
我们可以把时间效率和空间效率看作一个带状区域(看起来像某种光谱)的两个端线。
Think of space efficiency and time efficiency as two opposite ends on a band (a continuum).
令他感到惊奇的是：通过三棱镜的反射后，手电光的反射光谱变成了多彩的带状图像。
He is amazed that through triangle mirror, the torch light's reflection spectrum turns to a colorful ribbon image.
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