馏分

Different physical, chemical and biological processes may lead to distinctive nitrogen and oxygen isotope fractionations.

引起地下水中NO3含量显著减少的不同物理、化学和生物过程，所产生的氮、氧同位素分馏效应有明显差别。

Their technology and process is basically similar to that used ethylene, the raw material for the oxygen in the silver catalyst, caused by methane or nitrogen stabilizer, the existence of inhibitors of chloride, ethylene oxide directly generate ethylene oxide and ethylene B N and further to certain substances in water than in the tubular reactor for generating hydration ethylene glycol, ethylene glycol solution through evaporation to mention thick, dehydration, fractionation be ethylene glycol and other by-products.

它们的工艺技术和工艺流程基本上相似，即采用乙烯、氧气为原料，在银催化剂、甲烷或氮气致稳剂、氯化物抑制剂存在下，乙烯直接氧化生成环氧乙烷，环氧乙烷进一步与水以一定物质的量比在管式反应器内进行水合反应生成乙二醇，乙二醇溶液经蒸发提浓、脱水、分馏得到乙二醇及其他副产品。

Kotina is a Refined ,Bleached and Deodorised Fractionated Palm Kernel Oil based HARD BUTTER with excellent keeping qualitiesAPPLICATIONSKoatina is Bland and Odourless with excellent palatabilityKoatina can also be used for coating and center application in Wafers, Crakers, Nuts and Caramels.

Kotina 是提炼，被漂白的和除臭的被分馏的棕榈橄榄油基于的坚硬黄油与优秀保持的qualitiesAPPLICATIONSKoatina 是平淡和无气味的以优秀palatability Koatina 可能被使用为饼干提取乳脂和奶糖装填 Koatina 可能并且被使用为涂层和中心应用在薄酥饼、Crakers 、坚果和焦糖里。

After the comparation with the experimental results of these four catalyzers,we declare that C-4 is a catalyzer of good catalytic activity and good recovery ratio.The mixed oil抯 recovery ratio is up to 71.46%,65.OO% and 50.OO%.After fractional distillation gasoline and diesel come up to 90 and 0抯 standard by the test of Kunming Product Quality Inspection Bureau.

将这四种催化剂的实验结果进行对比分析，判定C-4是一种裂化活性好、油品收率高的催化剂，在C-4 催化剂的作用下，三种原料的混合油出率分别达到71.46％、65.00％、 50.00％，混合油分馏出的汽油、柴油经昆明市产品质量监督检验所检验，分别达到90号和0号的标准！

The corrosions of reflux tank of pre-fractionator in an oil refinery were analyzed;proposals and measures for avoiding corrosion were suggested in this paper.

对某炼厂检修发现的预分馏塔回流罐腐蚀减薄情况进行了分析，提出了防止腐蚀的建议和措施。

After the modification, the acetaldehyde consumption and energy consumption were reduced by about 10% respectively, and install time of the towers was only about 1/5 of the float valve towers with cutting 60% of the cost.

采用JKB-125Y型板波纹填料塔代替浮阀塔，对乙醛分馏塔和酒精回收塔进行改造，乙醛单耗及能耗可降低10％，塔设备的投资可节约60％，塔设备安装时间可缩短至原来的1/5。

In the dissertation, it is systematically demonstrated that soft sensing technology's background, relating theories and skills, problems in application and their solutions. On this basis, some new methods about data processing, on-line tuning are proposed, and an generalized soft sensing software package is developed, which get successful applications in Gas Separator Unit and FCCU of oil refinery.

本文系统阐述了软测量问题的产生的背景、软测量问题的有关理论和方法，并讨论了软测量技术在实际应用过程中所遇到的问题及其解决方案，提出了数据处理，模型实时校正、应用实施等方面的一些新方法，建立了通用的软测量软件包，并在炼油厂气体分馏装置、催化裂化装置获得成功的应用。

The isospin fractionation degree is a sensitive function to the mass and beam energy of the colliding system.

研究结果表明同位旋分馏强度是反应系统质量和能量的灵敏函数。

Thermal decomposition, sometimes with catalysis, of a complex substance, especially the breaking of petroleum molecules into shorter molecules to extract low-boiling fractions such as gasoline .

裂化有时通过催化作用对复合物的热分解，尤指把石油分子分解成更小的分子并提取低沸点的分馏部分，如汽油

But for Hong Hua, each peak ismany compounds, and fractionating these yields more multicompoundpeaks like nested matryoshka dolls.

但是对红花油来说，一个峰是许多化合物，将之分馏产生了更多的多化合物峰，就像俄罗斯套偶。

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。