您要查找的是不是：
- continental theory of petroleum origin 陆相成油说
- inorganic theory of petroleum origin 石油无机成因说
- A Probe of Theory of Petroleum Origin 关于石油成因理论的争鸣
- kerogen theory of petroleum origin 干酪根成油说
- organic theory of petroleum origin 石油有机成因说
- High Fire-Point Electrical Insulating Oils of Petroleum Origin 石油起源高燃点电绝缘油
- 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。
- The illness is organic in origin. 该病起初是器质性疾患。
- Its origin is wrapped in mystery. 它的起源仍是个未解的谜。
- 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。
- The apparent celestial origin of a meteoric shower. 流星群的辐射点明显的流星雨太空光源
- The vase seems to have an orient origin. 这花瓶好像来自东方。
- 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 origin of the universe is an ageless topic. 关于宇宙的起源的问题是个永恒的论题。
- He flew high though he was of humble origin. 他虽出生低微,却胸怀大志。
