熔点

The interaction parameter of POM and Novolak was calculated by Hoffman-Weeks' equilibrium melting point method and Flory equation.

DSC测试表明， POM与Novolak共混后，共混物的熔点下降；通过DSC测试得到数据，采用Hoffman-Weeks平衡熔点外推法和Flory熔点下降方程推算出POM与Novolak的相互作用参数

The results show that melting point and fusion enthalpy of the fresh nano-aluminium powders are 649.7 ℃ and 3.7 kJ/mol in Ar, respectively, which are 10.3 ℃ and 7.09 kJ/mol lower than those of coarse-grained Al.

研究结果表明：在Ar气流中，新纳米铝粉的熔点为649.7 ℃，熔化焓为3.7 kJ/mol，分别比粗晶铝的熔点(660 ℃)和熔化焓(10.79 kJ/mol)低10.3 ℃和7.09 kJ/mol；在N2气流中，从20 ℃升温到800 ℃时，新纳米铝粉增重约为33%，熔点为648.8 ℃。

Properties: colorless needle-like crystals, melting point 105 ~ 106 ℃, optical rotation +51 °(c = 0.978, chloroform), other reports shows that by ethanol recrystallization the melting point 104 ~ 105 ℃, methanol re - the formation of solvate crystal melting point 84 ℃.it is Soluble in acetone, chloroform, insoluble in ether, petroleum ether, insoluble in water.

性质：无色针状结晶，熔点105～106℃，旋光度+51°（ c=0.978，氯仿），还有报道经乙醇重结晶熔点104～105℃，经甲醇重结晶形成的溶剂化物熔点84℃。易溶于丙酮、氯仿，难溶于乙醚、石油醚，不溶于水。

After prolonged heating 15h, 120° of the origina lly isolated stereoisomer B (melting C point mp: 157° Diels and Alder obtained two new stereoisomers E (mp: 153° and F C), C (mp: 163° Equilibration of B with a catalytic amount of a strong base at 25° ga ve a C).

在比原始分离异构体 B (熔点： 157°C)的方法延长加热时间之后(15h， 120°C)， Diels and Alder 获得了两个新的异构体 E(熔点：153°C)和 F(熔点：163°C)。

A theoretical model was set up through introduction of moving heat source principle and a closed form analytical solution was obtained using Green's function under the third boundary condition.

在极端环境条件下，当温度低于低熔点金属的熔点时，低熔点金属或者合金可能发生凝固，这种情况不但使强化换热效果减弱，甚至可能恶化整个散热系统。

Solid mixtures comprising a variety of high melting bisphenols; 4,4'-biphenol; 3,3,3,3'tetramethylspirobiindanbisphenol, and 4,4'-sulfonydiphenol are converted to stable, homogeneousmelt solutions at 200 DEG C, a temperature substantially below the melting points of the high melting bisphenols in their pure states.

在200℃下，基本低于纯态高熔点双酚的熔点的温度，将含有各种高熔点双酚；4，4′-二酚；3，3，3，3′四甲基螺二茚满双酚，和4，4′-磺酰联苯酚的固体混合物转化为稳定、均质的熔体溶液。

In coal gasification techniques, the gasifier is the key equipment which directly affects gasification characteristics, therefore flameless oxidant technology was applied to the design of new gasifier for high ash melting coal, and gasification characteristics in the gasifier were carried out by not only experiments under cold state and therma1 state, but also numerical simulations in this paper.

由于气化炉是煤气化技术中的最关键设备，因此，本文以高灰熔点煤的高效气化为背景，归纳分析了各种先进干煤粉气流床气化炉的炉型结构，将无焰氧化技术应用于粉煤气化，提出了一种基于无焰氧化的新型干法进料煤粉气化炉，进行了炉内冷态、煤粉气化的热态试验和数值计算，分析了高灰熔点煤在该气化炉中的气化特性，并以此为基础，对气化炉的结构进行了优化，提出了无焰氧化分级气化炉，对高灰熔点煤在该气化炉中气化特性进行了数值计算与分析。

Then, gasification experiments of high ash melting point coal with dry pulverized coal feeding were carried out on the gasification test system, the flame images were observed to validate the feasibility of flameless gasification inside the gasifier, temperature distributing inner the gasifier and syngas components were measured under different / atom ratio and steam/coal ratio conditions.

进而，建立煤粉气化炉的物理和数学模型，运用概率密度函数方法对高灰熔点煤在基于无焰氧化的煤粉气化炉内的气化过程进行了模拟计算，参照小试的试验工况，验证了气化炉模型；分析了不同氧碳原子比、蒸汽煤比和气化压力对高灰熔点煤气化特性的影响，并可视化地研究在典型工况下高灰熔点煤在该气化炉中气化过程，为进一步炉型结构和气化工艺的优化设计提供依据。

Co-firing characteristics of corn stalk and stone coal in different proportion were investigated by thermal gravimetric analysis. The results showed that corn stalk can improve the ignition and combustion of stone coal. The agglomeration experiments on corn stalk were made in a bench-scale bubbling fluidized bed with quartz sand as bed material and stone coal ash as additive. The results indicate that stone coal ash can inhibit agglomeration of bed material particles at temperature of 900℃. Agglomerate of blends was analyzed by means of scanning electron microscopy, energy-dispersive X-ray, and the bed materials were analyzed by means of X-ray fluorescence. Analysis showed that aluminum element and iron element in stone coal ash can react with alkali compounds and eutectics with low melting point, form a covering layer with high melting point on the surface of biomass and quart sand particles, thus inhibit the forming and transfer of low melting compounds.

以玉米秸秆与石煤按不同比例组成的混合物为研究对象，在TG-DTG热分析仪上进行了燃烧特性分析，结果表明玉米秸秆有利于石煤的着火和稳定燃烧，对石煤有一定的助燃作用；在小型鼓泡流化床实验装置上，以石英砂为床料、石煤灰为添加剂，进行了玉米秸秆成型燃料流化床燃烧的床料黏结实验，结果表明：石煤灰能够在生物质流态化燃烧过程中有效地抑制流化床床料黏结现象的发生；通过对实验中形成的结团进行扫描电子显微镜X射线能谱(scanning electron microscopy/Energy-dispersive X-ray- SEM/EDX)，对床料进行X射线荧光光谱(X-ray fluorescence，XRF)分析，结果表明石煤灰中的Al和Fe能够与生物质灰中的碱金属化合物以及低熔点共熔物发生化学反应生成高熔点物质，并且覆盖在生物质碳颗粒与石英砂颗粒表面形成隔绝层，从而阻止低熔点物质的生成与迁移。

Through analyzing on the upper part of oil box and the design of the drawing die structure,the characteristics of the low melting point alloy were described,and discussed the characteristics of low melting point alloy die and the application in plate materical drawing process, the attention problems of die design were pointed out.

以分析油箱上体工艺特性和设计其低熔点合金拉伸模具结构为例，论述了低熔点合金材料的特点，介绍了低熔点合金模具的特点及其在板料冲压工艺中的应用，指出了模具设计应注意的问题。

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失