求翻译：采用水浴锅乙醇浸提法从何首乌中提取黄酮类物质，使用分光光度法，在510nm处测定吸光度，计算出所提取的黄酮类物质含量。是什么意思？

Water bath ethanol extraction to extract flavonoids from Polygonum multiflorum, using the spectrophotometric determination of absorbance at 510nm at and calculate the content of flavonoids extracted.

Jacuzzi as well as a pot from which ethanol Baptist Church was first extracted in the flavonoid substances, created using the spectrophotometer at 510 nm, and the suction line sensor, measuring out the extraction of the flavonoid substances.

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Water bath ethanol extraction flavonoids extracted from radix polygoni multiflori Preparata, using spectrophotometry, 510nm measuring absorbance, calculate the content of flavonoids extracts.

Uses the water-bath ethyl alcohol to soak the formulation to withdraw the flavanone class material from the polygonum multiflorum, the use spectrophotometric method, in the 510nm place determination extinction, calculates the flavanone class material content which withdraws.