| ประโยคภาษาจีน : 中文句子 | 
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|  lín suān磷酸  suān huà酸化  tiáo jiàn条件  xià下  duì对  fǔ zhú腐竹  yàng pǐn样品  jìn xíng进行  zhēng liú蒸馏  cǎi yòng采用  yǐ xiān bǐng tóng乙酰丙酮  fēn guāng分光  guāng dù光度  fǎ法  cè dìng测定  jiǎ quán甲醛  cán liú liáng残留量 | 
| Under the situation of phosphonic acid, the extraction of formaldehyde in dried bean milk cream was carried out by distilling and the formaldehyde was determined by acetyl acetone spectrophotograhy. |