单词：light flux
light flux的用法和样例：
例句
- The luminaire shade adopts Pyrex glass with high light transmission.玻璃罩材料为耐热玻璃，透光性能好，光通量损失小。
- 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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