石油精

All of our equipments were brought in from Taiwan and Germany. Our company mainly accepts OEM business and produces stainless steel valve, pump, ship hardware,construction hardware, impeller and other precise mechanical parts. The products are used for many industries such as chemicals, petroleum, hydro-machine, medical appliance, vehicle, ship, weapon, sports instrument, construction fitment and aerostat, etc.

浩宇精铸的全套设备从台湾和德国引进，公司主要以承接客户的委托加工，生产不锈钢阀门、泵、船用五金、建筑五金、叶轮以及其他各种精密机器零件，产品服务于化工、石油、流体机械、医疗器械、车辆船舶、兵器、运动器械、建筑装潢、航天航空器等广泛领域。

I tried water, benzine, film cleaner, glass cleaner and pretty much every other solvent I could find in the company and the only things which would dissolve the oily stuff were gasoline and ethanol.

我试了用水、油精、胶片清洁剂、玻璃清洁剂擦，基本上是公司里能找到的所有溶剂我都试过了，最后发现只有石油和酒精能溶解这种东西。

Compareing with essential oil of the steam distillation method and the bensine solvent extraction method through GC-MS analysis .The result showed that:the essential oil principal constituent extracted by benzine is camphene,a-pinene,bornyl acetate, limonene, 1-methyl-4-(1-methylethyl)-1,4-cyclohexadiene, myrcene, caryophyllene, borneol.

对巴山冷杉针叶水蒸气蒸馏和石油醚萃取所得精油的GC-MS 分析对比研究结果表明：石油醚萃取精油主要成分为：莰烯，a-蒎烯，乙酸龙脑酯，柠檬烯，1-甲基-4-异丙基-1，4-环己二烯，月桂烯，石竹烯，龙脑。

The results of our research showed that the chinaberry seed oil, two emulsion formulations of crude toosendanin, Margosan-O, azadirachtin, AZT(NR-2), AZAL-S, petrolem ether extract of the leaf of Tagetes erecta, methyl extract of the root of Tagetes erecta, methyl extract of the whole plant of Bidens pilosa, the oil of Ageratum conyazoides and polygodial had potent toxicity to the larvae of Anopheles sinensis, Culex quinquefasciatus and Aedes albopitus.

中华按蚊Anopheles sinensis、致倦库蚊Culex quinquefa-sciatus和白纹伊蚊Aedes albopictus都是我国重要的传病蚊种。本研究首次证实下列植物的提取物对上述三种蚊虫有毒杀作用：(1)苦楝：苦楝油；(2)川楝：川楝素乳剂、蔬果净；(3)印楝：Margosan-O、印楝素、AZT(NR-2)、AZAL-S；(4)万寿菊：叶石油醚提取物、根甲醇提取物；(5)三叶鬼针草：整株植物甲醇提取物；(6)百花草：精油；(7)水蓼：Polygodial。

In this thesis we carried on the preliminary study to the extraction process of plant essential oil, and measured the biological activity of plant essential oil on red flour beetle, Tribolium castaneum and the housefly, Musca domestica vicina.

采用三因素四水平正交试验设计对植物精油进行提取工艺研究，最佳提取工艺条件是A_2B_3C_3，即50g供试植物加入1000ml水，水蒸气蒸馏120min后，用石油醚萃取，萃取液浓缩以后得到的精油可获最大收益。

A process in which naphthas are converted to high-octane aromatics in the presence of hydrogen and a catalyst under pressure and heat.

临氢重整在高温高压下，在氢和催化剂的作用下石油精转化为高辛烷值的芳烃的过程

Setting out with the angle of developing strategy and the industry of Daqing petrochemical complex and based on the analysis of the internal and external environment of Daqing petrochemical complex, this thesis analyzes Classifically and appraises the industry of Daqing petrochemical complex according to the affiliated industry of speciality, and points out the advantage and disadvantage, opportunity and threat of the Daqing petrochemical complex. Then puts forward Daqing petrochemical complex: makes larger and stronger partly, makes special and precise partly, develops steadily partly, withdraws from a part progressively and puts forward concrete suggestions to strategic implementation.

本文从大庆石油化工总厂的产业定位和发展战略的角度出发，通过对总厂内外环境的分析对总厂的产业按专业所属产业进行了分类分析、评价，指出了大庆石油化工总厂的优势与劣势、机遇与威胁，提出了大庆石油化工总厂的发展战略：做大做强一部分，做专做精一部分，稳步发展一部分，逐步退出一部分并对战略的实施提出了具体建议。

Fine Descriptions on OiI storage layers of Weibei Oil fields This paper is a subentry of """"Evaluation Project of Oil and Gas Collection Rules and Exploration Aims For Weibei Sag Areas"""" established by Dongsheng Petroleum Development Corporations.

本论文是胜利油田东胜精攻石油开发集团有限公司，&潍北凹陷油气富集规律与勘探目标评选&项目，为加强项目的精攻性，提高项目的应用性，而设置的一个专门研究课题。

Effects of different extraction modes, extraction time, pressure and temperature on the extraction yield of onion essential oil and sulphur concentration were investigated,and the different extraction solvents and extraction times were researched in liquid-liquid extraction procedure. The optimal conditions of extraction of onion essential oil with subcritical water were static extraction, 100~150℃sequential program temperature increasing extraction for 30min, 5MPa, petroleum ether as extraction solvent for two times.

考察了提取方式、提取时间、温度、压力对洋葱精油的提取得率及含硫化合物浓度的影响，并对液液萃取中溶剂的种类和萃取次数进行了研究，得到了洋葱精油的亚临界水提取最佳工艺：静态提取、提取时间30 min，压力5 MPa，100～150 ℃的连续程序升温，石油醚为萃取溶剂，萃取2次。

Main Products: PRS refined C5 petroleum resin PRS Series refined C5 petroleum resin series are the company's long-term efforts to develop advanced technologies in order to by-product ethylene cracker C5 group is divided into raw materials, the use of continuous automated production process, refined by the C5 , catalytic polymerization process such as production of high quality transparent particulate organic polymer.

主要产品：PRS精C5系列石油树脂 PRS精C5系列石油树脂是本公司经过长期努力开发的先进技术，以乙烯裂解副产物C5组分为原料，采用连续自动化生产工艺，经C5精制、催化聚合等过程而生产的具有较高品质的透明颗粒状有机聚合物。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。