petroleum ether extract

例句：

1. 1. The petroleumether extract is used in the production oflubricants and asphalts.
   石油醚提取物用于生产润滑油和沥青。
2. 2.The petroleum ether extract hasbeen shown to have anti-inflammatory properties.
   石油醚提取物已被证明具有抗炎性质。
3. 3. Thepetroleum ether extract was foundto be effective in treating acne.
   研究发现，石油醚提取物对治疗痤疮有效。