查询词典 octane number

A new prediction method for octane number of acyclic alkanes is proposed.

提出了一种采用基团组成和拓扑指数分别描述分子的化学组成和结构信息，进而预测烷烃辛烷值的方法。

Some properties of petroleum products in refinery such as gasoline octane number and diesel cetane number are necessary to be online monitored.

在炼油过程中，通常需要对产品的关键品质比如汽油辛烷值或柴油十六烷值等进行在线监测。

After methanol is taken out, the research octane number of C5 etherealization product is about 95. The alkene content is less than 35%, the sulfur content is less than 10μg/g and the aromatics content is less than 1%, it is a clean and high quality gasoline component with high octane number.

脱除甲醇后，裂解C5馏分选择性加氢后的醚化产物的研究法辛烷值为95左右，烯烃含量小于35%，硫含量小于10×10^(-6)，芳烃含量小于1%，是一种优质、清洁的高辛烷值汽油组分。

Because the octane number is volatile in the process of reconciling, the timely and accurate detection of the octane number of gasoline to produce high-quality gasoline will become more important.

在调和过程中由于其辛烷值波动较大，因此实时准确地检测汽油的辛烷值对生产高品质的汽油具有重要意义。

It was found that more branch-2 olefin and C5~C6 isoparaffin molecules existed in MIP naphtha. The cause of MIP naphtha having higher octane number and less octane loss during hydrotreating could be explained by the octane model of C6 hydrocarbons quantitatively.

通过对MIP和FCC汽油组成分析，发现MIP汽油组成含有较多的多支链烯烃、异戊烷和异己烷，基于碳六烃的辛烷值模型，可以定量地解释MIP汽油辛烷值高和加氢MIP汽油辛烷值损失低的原因。

For high octane number fuels, it was found that when an additive named as DTBP is added to RON90 and iso-octane, the HCCI operation ranges could remarkably expand to lower temperature and lower engine load.

针对高辛烷值燃料不容易压燃的缺点，本文在RON90燃料和异辛烷中加入一定比例的过氧化二叔丁基，达到了控制高辛烷值燃料着火时刻、提高燃烧效率、降低排放的目的。

Experiments were carried out on a HCCI platform to evaluate the effects of cetane number and octane number on the HCCI combustion characteristics and emissions using n-heptane, RON25, RON50, RON75, RON90, and iso-octane.

进一步在发动机上对正庚烷、RON25、RON50、RON75、RON90和异辛烷在不同负荷下的HCCI燃烧特性和排放特性进行了试验研究。

Attempts have been done to increase the value of light naphtha isomerizes RON 60 to 70's light naphtha into RON 83 to 90's higher Octane number light naphtha to blend RON 95, or 98 higher Octane gasolines.

本研究为提高轻石油脑的应用价值，应用轻油异构化工场将辛烷值只有60~70的轻石油脑提升至83~90，成为掺配95和98高辛烷值汽油重要轻质油料之一。

The octane number of 5 substances were predicted using the new methods.The results show that the second level group contribution method exhibits significant improvements in accuracy and should be used for estimating the octane number of branched and ring hydrocarbons.In cases of simple straight chain bydrocarbons, however,the first level group contribution method should be used.

用新方法对未参加回归的五种物质的辛烷值进行了预测，结果表明对于含有支链和环的烃应采用第二水平基团法估算其辛烷值，对简单的直链烃采用第一水平基团法估算其辛烷值。

The initial pressure has slighter influence on the ignition delay for the fuels with high cetane number compared with the high octane number fuels.

进气压力的变化对高十六烷值的燃料着火延迟期影响较小，但对辛烷值高的气体燃料着火延迟期有一定影响。

We have no common name for a mime of Sophron or Xenarchus and a Socratic Conversation; and we should still be without one even if the imitation in the two instances were in trimeters or elegiacs or some other kind of verse--though it is the way with people to tack on 'poet' to the name of a metre, and talk of elegiac-poets and epic-poets, thinking that they call them poets not by reason of the imitative nature of their work, but indiscriminately by reason of the metre they write in.

索夫农 、森那库斯和苏格拉底式的对话采用的模仿没有一个公共的名称；三音步诗、挽歌体或其他类型的诗的模仿也没有——人们把&诗人&这一名词和格律名称结合到一起，称之为挽歌体诗人或者史诗诗人，他们被称为诗人，似乎只是因为遵守格律写作，而非他们作品的模仿本质。

The relationship between communicative competence and grammar teaching should be that of the ends and the means.

交际能力和语法的关系应该是目标与途径的关系。