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- purified petroleum benzin 纯苯
- Pay attention to fire prevention when recirculating and eluting with petroleum benzin. 用石油醚回流洗脱时应注意防火。
- The structures and compositions of the purified petroleum acids were characterized by using infra-red spectrum,nuclear magnetic resonance and negative-ion electrospray ionization mass spectrum. 通过红外光谱、核磁共振和负离子电喷雾质谱三种表征技术鉴定了原油中的石油酸结构和组成。
- Coenzyme Q10 is obtained through saponification, extraction with petroleum benzine, chromatography with silica gel and crystallization with ethanol. 采用醇碱皂化法，经石油醚萃取、硅胶柱层析，无水乙醇结晶、重结晶得到辅酶Q10。
- Water is purified by passing through rock. 水在穿透岩石的过程中获得了净化。
- Indonesia is abundant in petroleum deposits. 印尼的石油蕴藏量丰富。
- A chemical derived from petroleum or natural gas. 石油化学制品从石油或天然气中提炼出的化学产品
- A trademark used for a brand of petroleum jelly. 凡士林用来作为石油脂的商标
- Taiwan seems to contain no petroleum. 台湾恐怕没有蕴藏石油吧！
- This land is rich with petroleum. 这片土地盛产石油。
- petroleum benzin 石油醚,石油挥发油
- Water can be purified by filtration through sand. 水通过沙滤可以变清。
- The chemistry of petroleum and its derivatives. 石油化学石油及其复合物的化学
- Petroleum can be used to produce various chemical products. 石油可用于生产多种化学产品。
- An organic derivative, such as coal or petroleum. 有机衍生物一种有机衍生物，如煤或石油
- The soil has to is purified of all bacteria. 要消灭这土壤的所有细菌使之净化.
- The air in the room was purified. 房间的空气得到了净化。
- Crude oil can be refined into various petroleum products. 原油可炼制成各种石油产品。
- Souls are so purified in purgatory. （天主教教义中）人的灵魂将在炼狱中得到净化。
- Why you are not purified by its purity! 你怎能无动于泪水的幽辉?冷冷清清的黑暗!
