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This stoichiometric mixture represents the precise amount of air needed to completely burn one mole of methane. If more air is supplied than required for stoichiometric combustion, the mixture is termed lean and oxidising.

这个最佳混合比率表征了1摩尔甲烷充分完全燃烧需要的空气量，如果进入的空气量超过所需空气，称为稀薄燃烧。

Production of epsilon-glycolylnium is carried out by Beckman rearrangement reacting for cyclohexanone-oxime under the existence of solvent to obtain epsilon-glycolylnium contained mixture, crystalline separating for the mixture to obtain crude epsilon-glycolylnium crystal, dissolving by arene, extracting by water, adsorbing by resin hydrogenation catalyzing to obtain the final product. The value of potassium permanganate is less than 5, extinction value is less 0.05, volatile alkali is less than 0.5meq/kg and alkalinity is less than 0.05meq/kg.

本发明涉及一种ε―己内酰胺制备方法，其特征为：在溶剂存在下，环己酮肟经贝克曼重排反应，得到含有ε―己内酰胺的混合物，该混合物结晶分离后，得到粗ε―己内酰胺晶体用芳烃溶解，然后用水萃取，再经树脂吸附、催化加氢后，得到99.995％以上的高纯度的ε―己内酰胺，其质量指标为高锰酸钾值小于5，消光值小于0.05，挥发性碱小于0.5meq/kg，碱度小于0.05meq/kg。

The trail bridge design,the mixture performance test,the temperature between the different layers of the deck surfacing,the traffic investigation and the surface performance observation are introduced in this article.The basic performance of the mixture used in the trial bridge is analyzed through rutting tests at high temperature,bending tests at low temperature,fatigue tests of the composite beam and pull off tests.The rule of the temperature gradient distribution in the pavement and the variety relation ...

介绍润扬大桥钢桥面铺装试验桥的方案设计、试验研究、温度测试、交通量调查和使用性能跟踪观测，通过混合料高温车辙试验、低温弯曲试验、复合梁疲劳试验以及拉拔试验等分析实桥试验沥青混合料基本性能，阐述铺装内各层温度梯度分布规律及与大气温度变化关系，通过使用性能跟踪观测介绍浇注式沥青混凝土+环氧沥青混凝土新型铺装结构的工程效果。

While utilizing the time-temperature equivalent principle it has proposed the relation complex shearing: G* with driving speed: V, test temperature, and think the impact on high-temperature performance of asphalt mixture of temperature is greater than the impact on high-temperature performance of asphalt mixture of the driving speed.

利用时温等效原理提出了复数剪切模量G*与行车速度V、试验温度的关系，并认为温度对沥青混合料高温性能的影响大于行车速度对沥青混合料高温性能的影响。

Moreover, the determination of the content of dissociate cyclohexanone-omine in the mixture of rearrangement process in caprolactam production was also studied. The rearrangement mixture is a complicated and difficult system to directly analyze, containing great volume of sulfuric acid and some amount of sulphur trioxide, with higher viscosity and strong corrosivity.

此外本论文还对己内酰胺生产过程中的重排混合物中游离环己酮肟含量测定进行了研究，重排混合物是一个很特殊、难以直接分析的体系，含大量硫酸和少量三氧化硫，粘度大，腐蚀性强，且杂质种类较多。

Volatile gas and air mixture to form a mixture of explosive gases, open flame easily encountered explosions; When reached its explosive limit, the little attention, one pulling the light switch, or open the power tools, electric spark generated will lead to serious consequences.

挥发性气体与空气的混合物形成的爆炸性混合气体，遇到明火容易爆炸；当达到其爆炸极限，很少注意的，一个拉电灯开关，或者开启电动工具，产生的电火花会导致严重的后果。

Test Preparation Transfer about 2 g of the substance under test, accurately weighed, to a glass-stoppered, 250-mL conical flask, add 20 mL of a mixture of equal volumes of nitric acid and sulfuric acid, attach a suitable condenser, reflux the mixture for 1 hour, cool, cautiously dilute with water, and boil until fumes of nitrous acid no longer are noticeable.

Test准备 Transfer大约2 g在测试之下的物质，准确地被称，对玻璃防止， 250ml conical烧瓶，增加硝酸的相等的容量混合物的20 mL，并且硫酸，附有一适当的 condenser，循环加热混合物1个小时，凉快，慎重地稀释与直到亚硝酸发烟的水和煮沸 acid不再是引人注目的。

The preparation method provided by the invention is: firstly, to clean glass beads; secondly, to modify the surface property of the glass beads, such as sulfhydrylation; thirdly, to clean the modified glass beads; fourthly, to add reducing agent into the glass beads including the modified glass beads to prepare a reducing mixture; fifthly, to prepare silver salt solution; sixthly, to mix the reducing mixture with the silver salt solution. And silver-wrapped glass bead core-shell composite particles are obtained through the reaction, the air pump filtering, the washing and the drying.

本发明提供的制备方法为：(1)清洗玻璃微珠；(2)对玻璃微珠的表面进行改性，例如巯基化；(3)清洗表面改性后的玻璃微珠；(4)所得包含表面改性后的玻璃微珠中加入还原剂，配制成还原混合体；(5)另配制银盐溶液；(6)将还原混合体与银盐溶液混合搅拌，反应，抽滤、洗涤、干燥，得到银包玻璃微珠核壳复合粒子。

New correlations of frictional pressure drop for R410A-oil mixture flow boiling inside the straight enhanced tube and C-shape enhanced tube were developed respectively based on the mixture properties.

基于混合物性开发了R410A-油混合物在直强化管和C形强化管内流动沸腾的压降关联式。

In the period 1914-1918, the various belligerents used a mixture of these four methods, but it was a mixture dictated by expediency and false theories, so that at the end of the war all countries found themselves with both public debts and inflation in amounts in no wise justified by the degree of economic mobilization which had been achieved.

战争结束时，政府欠银行家一屁股债1914-1918年，各交战国混合使用这四种方法，但这种混合使用基于权宜之计和错误的理论，战争结束时，所有的国家发现自己同时面对着公共债务和通胀，其数量和量级与曾达到的经济动员程度完全不相符。

A historical region of southwest France between the Pyrenees and the Garonne River. The duchy of Aquitaine was joined with France after the marriage of Eleanor of Aquitaine to King Louis VII in1137, but its possession was disputed after her subsequent marriage to Henry II of England.

阿基坦法国西南部一个历史地区，位于比利牛斯山和加隆河之间，在1137年阿基坦的埃莉诺与国王路易斯七世结婚之后阿基坦公国加入法国，但当她再嫁英国亨利二世后，其归属权便受到争议

There are moments when I look at the smiling , happy faces of my expectant staff and wonder how they will cope when confronted by an outraged housemaster along with an unrepentant and recalcitrant bleached blond teenager in 18 years ' time .

有时候，我看着那些满怀期待的员工微笑，幸福的脸，想着当他们遇到一位愤怒的宿舍管理员和一位不知悔改，叛逆，而且将头发染成白色的18岁少年时，他们会如何处理。