产油的

Fennel oil was isolated by supercritical fluid extraction using CO2, and then followed by a two-stage fractional separation .

本文介绍从小茴香子中采用超临界CO2萃取和分级分离富含精油和富含脂油两种产品的工艺可行性，探讨了采用不同规模的超临界苹取装置萃取过程对萃取物组成、风味和CO2消耗量的影响以及第一分离罐的分离压力对两种产品产率的影响。

Like many Malthusian beliefs, peak oil theory has been promoted by a motivated group of scientists and laymen who base their conclusions on poor analyses of data and misinterpretations of technical material.

像许多马尔萨斯主义观点一样，产油高峰期理论是由一批受到利益驱动的科学家和门外汉鼓吹的，其结论建立对数据粗浅的分析和对技术资料的误判基础上。

To many countries in the world producing conventional oil, the oil sand resources in Canada are of something new.

对于世界上许多传统的产油大国来说，加拿大的油砂资源可能还是一个陌生的新兴事物。

The feeding System of the heavy oil catalytic cracking unit with a capacity of 600,000 t/a in Shengli Petrochemical Plant was modified in order to meet the requirements of atmospheric residuum processing.

为了适应加工常渣的需要，胜利石油化工总厂 60× 1 0 4t/a重油催化裂化装置，对进料系统进行改造，采用UPC鼓泡型喷嘴和分段进料，改善了原料油的雾化效果，降低蒸汽的用量，改善了产品分布，提高汽油产率 3 。2 3 %、轻油收率 0 。63 %，提高经济效益 1 92 9.2万元/a。

The Yushulin oilfield is located in eastern slope of Sanzhao seg of central sag zone in the northern part of Songliao basin. Its main oil-producing formations are Fuyu and Yangdachengzi oil layers of mesozoic group cretaceous. Its reservoir is fluvial facies sediment. Main sandstone is positive circle channel sandstone with calcium in the beneath, and microelectrode curve is box distribution function. Its secondary oil-producing formation is Yaoyi part of Putaohua oil layer. Its reservoir is delta front sediment. Main sandstone is subaquatic distributary channel sandstone, and microelectrode curve is box distribution function.

榆树林油田处于松辽盆地北部中央坳陷区三肇凹陷东部斜坡，主要产油层系是中生界白垩系泉三、四段的扶余、杨大城子油层，储层为河流相沉积，主要砂体为有底钙存在的正旋回河道砂体，微电极曲线形态为箱型；其次为姚一段的葡萄花油层，储层为三角洲内前缘沉积，主要砂体为水下分流河道砂体，微电极曲线形态为箱型。

Synthesis of biodiesel by transesterification of rapeseed oil and methanol catalyzed by KOH/Al2O3 solid base was studied. The catalyst was prepared by isochoric impregnation. Effects of some factors on the transesterification were investigated systematically and reaction conditions were optimized. The optimum reaction conditions on KOH/Al2O3 catalyst were: mass ratio of KOH to Al2O3 20%; calcination temperature 400℃ for 5h; molar ratio of methanol to oil 12:1, the amount of catalyst 5wt%; reaction temperature 60℃ and reaction time 2h.

采用等体积浸渍法制备了KOH/Al2O3负载型固体碱催化剂，并将其用于菜籽油与甲醇酯交换法合成生物柴油的研究；分别考察了催化剂附载量、锻烧温度、醇油摩尔比、反应温度、反应时间等条件对生物柴油产率的影响；结果表明：用等体积浸渍法，在400℃煅烧5h，制得负载量为20%的KOH/Al2O3催化剂。

N-(6-methyl-2-pyridine)-amino-methylene-diethyl malonate was produced by condensation reaction of 2-amino-6-methyl pyridine with ethoxymethylene diethyl malonate under optimal conditions that n(2-amino-6-methyl pyridine)∶n(ethoxymethylene diethyl malonate) is 1∶1.3, reacting time 45 min and temperature 130 ℃,the yield of this reaction was 96%,which was 6% higher than that of literature.

在250℃的反应温度下，分别以二苯醚、石蜡油和邻苯二甲酸二乙酯为热载体进行成环反应，得到4-氧-7-甲基-1，8-萘啶-3-羧酸乙酯的收率分别为88.6%、56.3%和61.2%，确定二苯醚为最佳热载体，并发现反应温度对产率的影响最大，原料配比次之，反应时间基本无影响。

Transesterification of rapeseed oil to biodiesel with methanol using calcium methoxide as a solid base catalyst was investigated.

研究了甲醇钙固体碱催化剂催化菜籽油和甲醇酯交换反应制备生物柴油的反应性能，分析了甲醇钙的比表面积、总孔体积、平均孔径和热稳定性，并研究了反应温度、催化剂用量和醇油摩尔比对生物柴油产率的影响。

Profits have been squeezed because costs have risen along with revenues, and governments of resource-holding countries have taken a greater slice of the proceeds through tax increases or contract renegotiations.

随着石油公司收入的增长，它们的成本也在上涨，而且在那些拥有石油资源的国家，其政府已通过加税或重新谈判合同攫取了更大份额的产油收益。

Beijing denied access to Hong Kong harbour for two US minesweepers that had requested protection from bad weather and unexpectedly turned back the Kitty Hawk, a US aircraft carrier that had planned a visit to Hong Kong for the US Thanksgiving holiday.

此外，中国还宣布了整个南中国海的主权，其中包括越南水城的产油区域，从而让诸如英国石油公司和埃克森美孚等国际石油公司感到震惊，也引发了在中国驻河内大使馆前的抗议。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。