Long-dated futures markets for jet fuel are highly illiquid. Much of the hedging is carried out with WTI contracts but the actual fuel is mainly refined from pricier oils.
由于针对喷气燃料的远期期货市场流动性不佳，绝大多数的套期保值交易都是以西德克·萨斯轻质原油期货合约为交易标的的。
Benzene, a chemical compound refined from crude oil, was found to cause leukemia in 1928 by two Italian doctors who detected the cancer in a worker exposed to benzene for five years.
苯是原油中提炼出来的化学合成物，1928年两个意大利医生检测到一名工人因长达五年的时间里暴露在苯环境中而患有癌症，他们发现苯可引发白血病。
Capsicine is a kind of natural plant alkaloid extracted and refined from chilies with special crafts.
辣椒碱是用先进的萃取精制工艺，从红辣椒中提取出来的一种天然植物碱。
The potato starch is made from high quality potatoes refined from advanced technology.
马铃薯淀粉是以优质马铃薯(土豆)为原料，运用先进工艺提纯的精制淀粉。
A powdered natural red food pigment was extracted and refined from phaseolus angularis Wight.
从赤豆中提制出一种粉状天然食用红色素，命名为“赤豆红色素” 。
It was firstly extracted and refined from tea in 1950's and its chemical structure was also determined at the same time.
50年代首次从茶叶中提取、精制出茶氨酸，并确定了它的化学结构，此后许多学者对其进行了大量的研究工作。
METHODS:Amino acid, fish oil and polysaccharide were one by one isolated and refined from the head of eel by enzymatic hydrolytic methods.
方法：采用酶解法分离鳗鱼头中氨基酸、鱼油和多糖并分别进行了精制。
The dark tea products manufactured in recent years particularly the products refined from high-grade raw materials, also has a very high collection value.
近几年出产的黑茶茶品，尤其是采用高档原料精工制作的黑茶品，同样具有极高的收藏价值。
The technical fluorene has been refined from the heavy wash oil with xylene. The optimum technological process and operation conditions are selected by the experiments.
以重质洗油为原料，二甲苯为溶剂精制工业芴。试验选出最佳的工艺路线与操作条件。
The technical fluorene has been refined from the heavy wash oil with xylene. The optimum technological process and operation conditions are selected by the experiments.
以重质洗油为原料，二甲苯为溶剂精制工业芴。试验选出最佳的工艺路线与操作条件。
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