石油的

Coal tar pitch and petroleum pitch were prepared from petroleum residues and coal tar by thermal reactions respectively.

分别以煤焦油为原料，在430℃热缩聚50min～270min和以石油渣油为原料在 310℃热缩聚130 min～370 min，制备了一系列具有相近软化点的煤焦油沥青和石油沥青。

The organization of pretrial petroleum exporting countries is the world's largest oil producing group.

石油输出国家组织是世界上最大的石油生产组织。

Products are mainly marine flange, steel flange with petro-chemical, product specification areas: Metric DN15 ~ DN2000, Inch Series 1 / 2 "~ 78", according to GB, HG, SH, SY, DL, and ASME, ANSI , JIS, DIN and other standard production, are widely used in petroleum, chemical, natural gas, electricity, nuclear power, metallurgy, shipbuilding, food, pharmaceutical, urban water supply and environmental protection management of the road industry, and its materials, specifications, size, performance in full compliance with relevant standards.

法兰产品主要有船用、石油化工用钢制法兰，产品规格范围为：公制DN15~DN2000，英制系列1/2"～78"，可按GB、HG、SH、SY、DL和ASME、ANSI、JIS、DIN等标准生产，广泛应用于石油、化工、天然气、电力、核电、冶金、造船、食品、制药、城市供水和环保等行业的管路上，其材质、规格、尺寸、性能完全符合相关标准。

BP owns a quarter of Prudhoe Bay but operates the entire field on behalf of ExxonMobil and ConocoPhillips.

英国石油只拥有四分之一的普拉德霍湾油田，但却代表埃克森美孚和康菲石油公司经营着整个油田。

This paper has discussed two topics, oil prices shock to relative industries and oil industry cycle fluctuation.

本文分别研究了石油价格冲击对相关产业的影响以及石油相关产业周期性波动问题。

Our results showed that the mortality from petroleum ether extract of Inula britanica; Ricinus communis methanol ether extract; Photinia serrulate petroleum ether extract after treatment, which showed significantly higher acaricidal activities than the other ones in the concentration of 2 mg/ml.

结果表明：当提取物浓度达到2mg/ml时，旋覆花石油醚提取物，蓖麻子甲醇提取物，石楠叶石油醚提取物的杀螨活性较高。

The college has been well-known as the "Royal Academy" in the petroleum and pipeline industry.

学院被石油管道人誉为"皇家学院"，在石油行业和社会享有很高的声誉。

The reference price used by OPEC for oil price changes, based on the price of Saudi Arabian light crude oil.

石油输出国组织在改变石油价格时所使用的参数价格，其基础是沙特阿拉伯轻原油价格。

With the increment of petroleum imports and exports, it is necessary to forecast seaborne volume of China petroleum.

随着中国石油进出口海运量近几年的高速增长，对中国石油进出口海运量进行预测越发显得必要。

Solani. The extract was further separated into two parts and one part separated by ethyl acetate while the other was separated by petroleum ether. Based on the inhibition experiment against R. solani, ethly acetate extract has a rather strong effect on R. solani with 89.70% inhibition rate and 15.52 mgmL^(-1) EC 50.The effect of petroleum ether extract on R. solani is relatively weak. The former was again divided into five parts in silica gel column, of which the second part significantly inhibits R. solani. During the periods of 24 and 48 hrs, the inhibition rate of the second part on R. solan is respectively 89.58% and 80.36%.

结果表明：鸭粪乙醇提取物对水稻纹枯病菌有抑制作用，24h内最高菌丝生长抑制率和EC50分别为88.64%、26.11mgmL^(-1)；鸭粪乙醇提取物经萃取分离得到石油醚和乙酸乙酯两种组分，其中石油醚组分抑菌效果较弱，乙酸乙酯组分抑菌能力较强，其对水稻纹枯病菌抑制率为89.70%，EC50为15.52mgmL^(-1)；对乙酸乙酯组分进行硅胶柱层析分离得到5种流份，其中第2流份有显著抑菌活性，在24h和48h内对水稻纹枯病菌的抑制率分别为89.58%和80.36%。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。