单词 | light beam |
例句 | DEFINITIVE EXAMPLES 权威例句〔turbidimeter〕An instrument for measuring the loss in intensity of a light beam through a solution that contains suspended particulate matter.浊度计:测量和比较液体浊度的仪器,其方法是观察通过含有悬浮物质的溶液的光,并测定其亮度的损失美国传统 |
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