挥发油,芳香油
1. 挥发油:4.挥发油(Volatile Oil) 在植物界分布很广,尤其是种子植物居多. 它是一类可随水蒸汽蒸馏、与水不相混合的挥发性油状产物的总称. 挥发油由多种化合物组成. 油中的香气成分大多是分子中含氧的萜烯、芳烃、醇、醛、酮、酯、酚、酸、醚等.
2. 齐墩果烷:多萜 oleanane | 齐墩果烷 volatile oil | 挥发油 essential oil
3. 精油:volatile matter 挥发物 | volatile oil 精油 | volatile solvent 挥发性溶剂
4. 中药:稠油:Heavy oil | 中药:volatile oil | 油画:oil painting
1. volatile oil
1. China's refiners have long complained about rigid oil product prices and volatile crude prices creating uncertainties for their businesses.
2. While imported oil makes up only about 12 percent of China's total energy needs, its energy lifelines increasingly lead to the volatile Middle East.
3. Volatile oil prices may be in for further rises in future, and experts are now suggesting the pricing system of oil in China be reformed.
4. Oil prices remain high but volatile due to low inventories and geopolitical uncertainties ahead of the winter heating oil season.
5. The figure is expected to top 57 percent in 2012 as more than half of the imported oil is from the volatile Middle East.
6. China's energy demands are growing exponentially as it modernizes, while Japan is eager to wean itself off oil from the volatile Middle East.
7. Private carriers have also been hit by volatile oil prices and the economic slowdown.
8. The reserves are intended to reduce the risks that arise from volatile crude oil prices and a growing reliance on imports.
9. Domestic enterprises are calling for oil futures as a means to hedge risks as the global oil market becomes increasingly volatile.
10. The oil project in the volatile regional state started operation just a few days ago.
noun
1. an oil having the odor or flavor of the plant from which it comes
used in perfume and flavorings
Synonym: essential oil