石油

At an extremely deep oil-drilling site, a remote control submersible's camera captured an eerie surprise: an alien-like, long-armed, and "elbowed" Magnapinna squid, scientists said in November.

十一月科学家们称在一座极深的石油钻井平台下，一台遥控潜水摄像机拍到一个怪异的生物：一条形似外星生物，长长的胳膊，并且用"肘"行动的 Magnapinna 乌贼。

Biofuels were first met with strong approval as they were a possible solution to the dependence of the world on oil products for energy; however, using food products that could otherwise be used as aliment for energy production raised concern from many experts.

生物燃料在刚刚兴起时作为可能的石油替代品受到了广泛的支持，然而，使用食品进行能源生产可能导致的问题引起了许多专家的关注。

The determination of alkali metal and alkaline earth metal ions by non suppressed ion chromatography was described.

引言碱金属和碱土金属离子的分析在环境、地质、石油化工、农业等许多领域有着重要的意义。

In recent years, TEM has make it easier in searching water, city government engineer, salt and alkali soil, pollution survey and shallow layer petroleum constitution graph and so on.

近年来在找水、市政工程、土壤盐碱化和污染调查以及浅层石油构造填图等方面都取得了良好效果。

They found that pyrolytic reactions were catalyzed by alkaline earth metal cations in carbonates and inhibited by silicates.

Karabakan和玉"俄罗斯"m(1998)矿物矩阵的影响石油页岩在转换成有机物的干酪根在热解反应。

Oil and natural gas contains a lot of saturated hydrocarbons, but it is difficult to isolate a pure alkane.

石油和天然气中含有大量饱和烃，但很难分离出纯的某一烷烃。

A colorless flammable liquid alkane derived from petroleum and used as a solvent .

一种无色、易燃烧的液体，从石油中提取，用作溶剂。

A flammable colorless gaseous alkene; obtained from petroleum and natural gas and used in manufacturing many other chemicals.

一种无色易燃的气态烯烃，从石油和天然气中提取，用于制造其他许多化学品。

Polyethylene units are indispensable for alkene plants and their normalperformance is vital to regular operation of the overall plant.

中国石油总公司辽阳分公司低压聚乙烯装置的改造、调优工程，对于烯烃厂的生产运行、质量提升已及经济效益关系重大。

Methods: from prepation of crude drug as start, study the technology of extract and defat with L9 (3~4) orthogonal test. With EtOH extraction and water sed, alkali washing, EtOAC extraction as main methods of eliminate dopant. Finally with alky AlzO3 chromatographic column, rich and gain anticancer active site. The maximum response was achieved at a 40 min extracting time with 10 times volume 90% EtOH added to the sample for the first time and 30 min for the second time. Adding 10 times water will produce precipitation; Place the precipitation into 6 times petroleum benzin to de-fat at 60℃.

云南红豆杉中抗癌活性物制备工艺研究方法：利用正交设计试验L9(3~4)确定原料药提取工艺为：10倍量90％乙醇提取两次，第一次40分钟，第二次30分钟；醇提液用10倍量水沉；沉淀加6倍量石油醚40℃脱脂；用1mol／L的NaOH溶液碱洗，除去酸性杂质；以碱性氧化铝柱，以环己烷／丙酮为洗脱溶剂，在环己烷-丙酮(6：4)段富集到所需活性部位，洗脱剂用量为3VB。

In the negative and interrogative forms, of course, this is identical to the non-emphatic forms.

。但是，在否定句或疑问句里，这种带有"do"的方法表达的效果却没有什么强调的意思。

Go down on one's knees;kneel down

屈膝跪下。。。下跪祈祷