light petroleum的用法和樣例：
例句
- Its allelochemicals are mainly located in petroleum extract and the methanol eluent of the petroleum extract absorbed in activated charcoal.
它的化學互感物質主要集中於石油醚提取物及石油醚提取物吸附於活性炭后的甲醇洗脫物中。 - Study on Chemical Components of Petroleum Ether Fraction of Alcohol Extract from the Leaves of Cunninghamia lanceolata Hook.
杉木葉醇提物中石油醚溶解組分的化學成分分析。
