查询词典 crude

The distribution, resource volume, content of crude fat of Jatropha curcas were systematically investigated and studied in Yunnan province.

摘要对云南省麻疯树的分布区、资源量和粗脂肪含量开展系统调查研究。

Based on the problems of low viscosity index and the acidity increasing in the lubricating base oil,it has been found that the unstable quality of the crude oil was the root cause to effect on the quality of the base oil by analysis for long time;the low viscosity index and the higher acidity were resulted from the low paraffinicity and the high content of aromatics,cyclane.

针对润滑油基础油相继出现的黏度指数降低、酸值升高等问题，跟踪分析了润滑油基础油质量，认为原油的变化是造成润滑油基础油质量变化的根本原因；基础油组成中烷烃含量降低，芳烃和环烷烃含量上升是其酸值上升和黏度指数下降的内在原因。

Cytophaga sp was selected for heparinase production because it was more productive. Three heparinases, named HⅠ, HⅡ and H Ⅲ were purified from the crude cell extract by means of batch DEAE-Cellulose negative adsorption, Hydroxylaptide adsorption and releasing, SP-Sepharose cation exchange chromatography, Source 30S cation exchange chromatography, Poros 20HS cation exchange perfusion chromatography and Sephacryl S200HR gel permeation chromatography.

利用超声破碎、DEAE-纤维素反吸附去杂、羟基磷灰石批处理吸附层析、SP-Sepharose离子交换层析、Source 30S离子交换层析、Porous20HS离子交换灌注层析及Sephacryl S200HR凝胶排阻层析，从噬纤维菌中纯化出三种新的肝素酶。

Ultrasonic was applied in the acid removal treatment of high acid crude using glycerol as esterification deacidification agent.

将超声波技术应用到高酸原油酯化反应脱酸中。

Experimental study on enhanced deaquation process for extra-heavy crude oil using dehydrant ;2. DMF refining by molecular sieve as dehydrant ;3. Hybrid catalysts composed of JC207 methanol synthesized catalyst and dehydrant (HZSM-5 zeolite or γ-Al2O3) were prepared for the synthesis of dimethyl ether.

采用甲醇合成催化剂JC207和固体酸脱水剂(HZSM-5分子筛或γ-Al2O3)混合制得合成二甲醚双功能催化剂，并在固定床反应装置中进行了活性评价，考察了固体酸脱水剂的酸性对一步法合成二甲醚的影响。

Objective: To search for effective volatile oil of Chinese crude drug for killing demodex in vitro.

目的：筛选体外抗螨有效的中药挥发油。

The results showed that it is more difficult to demulsify for the emulsion of reacted acid and crude oil.

通过模拟酸化工艺，对桩西采油厂长堤线、混合线和桩一线的原油在残酸存在前后乳状液破乳脱水的对比实验，研究了残酸返排液对乳状液破乳的影响。

The article investigated the type and characteristics and demulsify ing of crude oil emulsions from ASP flooding production well.

本文研究了三元复合驱采出液的乳状液类型、性质和破乳方法，确定了可使三元复合驱采出液在破乳后油中含水量低于30%，水中含油低于0.3%的破乳剂配方。

The reasonable dewaxing method of prickly ash seed oil should be:① The low wax crude manufacture oil can use surfactant to dewax;② If the wax content is relatively high,progressive dewaxing can be adapted to reduce oil lose in the process;③ To the oil that need alkali refining,the wax can be eliminated with the free fatty acid in the process of alkali refining.

脱除花椒籽油中蜡质的合理方法应是：①含蜡量相对较低的精制粗油可选用表面活性剂法脱蜡；②当含蜡量相对较高时，为降低脱蜡过程中油的耗损率可选用分步脱蜡法脱蜡；③需进行碱炼的油，可在碱炼过程中将蜡质与游离脂肪酸一并除去。

The crude oil from the oil field is used as the base fluid and the synthesis condition of gelling agent aluminum dialkyl phosphate in oil-based fracturing fluid is studied in this paper.

根据相似相溶原理和油田原油的组分，探讨了油基压裂液胶凝剂二烷基磷酸酯铝的合成条件，进而对配制的压裂液流变性能、耐剪切性能、破胶性能等进行了测试和评价。

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。