放热的

The main factors of occurrence and development of coal self-ignition is the quantity of heat that is produced by coal spontaneously. Therefore, studying the coal exothermic property is the precondition of mastering the process of coal self-ignition, searching the law for it and developing coal seam fire prediction.

煤自燃的发生和发展最关键因素在于煤自发地产生热量，因此研究自燃煤的放热性是认识煤自燃过程、寻找自燃规律、发展预测预报技术的基础。

The reactions are all exothermic due to the participation of the metal ions, to be compared with the strong endothermic process of the unimolecular CO2 decomposition.

因为有金属离子的参与，使单分子CO2的强吸热分解反应变为生成CO和MO的放热过程。

Regarding the thermobaric explosive further tests, the research showed that the compressive stress was 6.699MPa; The tensile stress was 0.716MPa; Heat sensitivity was 288℃(5s); The anti-overload capacity may withstand 1.0×104g launch overloads and smaller than 2×105g the impact deceleration overload; first decomposition temperature was 251.9 ℃, highest exothermic peak temperature was 286.9 ℃; In the compatibility, except the ceresin and Oxidant, the ceresin and the F rubber, the ceresin and Al compatible rank could reach to second level of compatibility, the others could reach to the first level of compatibility.

对此粘结-钝感体系包覆的温压炸药样品进一步测试研究显示：抗压强度为6.699MPa；抗拉强度为0.716 MPa；热感度为288℃（5s爆发点）；抗过载能力为可承受1.0×104g的发射过载和小于2×105g的撞击减速过载；安定性为分解温度251.9℃，最高放热峰温度286.9℃；内相容性为除蜡类钝感剂+氧化剂，蜡类钝感剂+F橡胶，蜡类钝感剂+Al相容性等级为2级相容性较好外，其他组分间相容性均为1级，相容性很好。

The most important exothermal reactions in the crust can be expected from the chemical transformations of sulfides.

地壳中能够料想到的最重要的放热化学反应是硫化物的化学转变。

Besides, the effects of mixed acid on the reaction were analyzed, and the results indicated the mixed acid would react with stainless steel at the temperature higher than 118℃with a sharp exothermal, and could catalyze product decomposition, increase thermal hazards as well.

此外，本文还考察了酸对反应的影响，研究结果表明酸在118℃以上会与不锈钢发生反应，放热迅速，同时酸还会催化产物的热分解，加大了反应过程中的危险性。

It is worth mentioning that the Fe-Ti-C system of 75wt% Fe content belongs to low exothermal system, the combustion synthesis reaction took place at 734'C under the preset heating rate 1000℃/s based on the electric field, and there were small TiC particles without Fe〓Ti in the products, which also was one of the novelties of this research.

值得一提的是，对于Fe含量高达75wt％的Fe-Ti-C体系实际上属于低放热体系，然而在电场诱导下，当预设升温速度提高至1000℃/s，在743℃时发生了燃烧合成反应，所获的合成产物中TiC颗粒细小，且没有Fe〓Ti相出现。

The heat release calculation by external condensation of horizontal multitube, vibration check while media transversely flow over tube bundle, ensemble rigidity pipe bundle and connecting technology of tube and tube plate ware presented in this paper.

介绍了大型加热器的水平式多管排管外冷凝放热计算、介质横向流经管束时的振动校核、整体刚性管束以及管子与管板的连接工艺。

Early hydration characteristics and paste structure of complex binding material containing high-volume steel slag were studied by the determination of hydration heat evolution, type of hydration products as well as micromorphology of hardened paste using calorimetry, X-ray diffraction, pressure porosimeter, and envirnoment scanning electron microscope.

通过对胶凝材料早期水化放热性能和水化产物种类的测定，以及对硬化浆体显微形貌和孔结构的观察，研究了大掺量钢渣复合胶凝材料的早期水化性能和硬化浆体结构。

Due to the physical properties exhibit extremely rapid variations with the change of temperature near the pseudocritical point, the heat transfer performance of supercritical fluids are very different from that of conventional refrigerants.

二氧化碳跨临界循环放热过程处于超临界区，由于在准临界点附近CO2 的热物理参数变化非常剧烈，超临界区流体的换热有别于传统制冷剂，气体冷却器的换热优劣对系统性能影响较大。

In this paper,the influence of both the convective heat transfer of foil and the heat conduction in thermocouple wire on the performance of the radiational thin-foil heat flow meter has been considered and a precise mathematic model for this condition is presented and analysed in detail.

本文全面考虑了圆箔式辐射热流计中对流放热及热电偶丝导热对热流计特性的影响。建立了完整的数学模型，对灵敏度进行了详细的分析。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。