单词：rectangular band
rectangular band的用法和样例：
例句
- Total radiation instruments employ some broad spectral band sensors.全辐射仪器要使用某些宽频带传感器。
- Another attribute is the flux or radiant power that can be delivered in that narrow frequency band.另一个性质就是在这样窄的频带内可以给出很高的光通量或辐射功率。
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