查询词典 thermal

The paper researched volatility of heavy metalsand SO3,Cl in fly ash at high temperature and made a dynamic detection for decompound and volatility of substance of fly ash in calefactive process by Thermal Gravity,Differential Thermal Analysisand Infra.

熔融固化处理是安全的处理方法，但飞灰熔融过程中有有害物质挥发，造成二次污染。

The thermal stability and crystallization behavior were investigated by differential scanning calorimetry, differential thermal analysis and x-ray diffraction.

利用DSC， DTA 和 XRD对该非晶合金的热稳定性及晶化行为进行了研究。

The effect of zeolites ion-exchanged by transition metals on thermal catalytic cracking reaction is studied. The product distributions of the cracking reactions catalyzed by theβor ZSM-5 zeolites exchanged with transition metals are different from that catalyzed by corresponding Hzeolites, which means the mechanism of cracking reactions has varied. Group Ⅷ metals Fe, Co, Ni and Cu, Zn are shown to be of strong catalytic activity of oxidative dehydrogenation, while Ti and Cr are not of oxidative activity. Catalyzed by zeolites or catalyst containing Ag, conversion of thermal catalytic cracking reactions and the yield of ethylene increase while the yield of propylene does not decrease. Silver can not only promote the formation of carbonium ion, but also convert carbonium ion into free-radical via redox reaction. The weak adsorption of olefins on silver reduces the occurrence of hydrogen transfer and dehydrogenation. As a result, the yield of light olefins is favored by silver in the catalyst.

采用过渡金属交换的分子筛作为催化剂，进行催化热裂解制取乙烯的反应，研究发现，在β沸石分子筛和ZSM-5分子筛中引入过渡金属后，催化热裂解反应的产物分布与相应的氢型分子筛相比有了较大的变化，说明过渡金属的加入对于催化热裂解反应的机理具有影响，Ⅷ族金属如Fe、Co、Ni和第Ⅰ、Ⅱ副族Cu、Zn表现出较强的氧化脱氢活性，产物中氢气、焦炭的产率很高，Ti、Cr则未表现出氧化作用：分子筛及催化剂中引入银后，催化热裂解反应的转化率和乙烯的产率有了提高，丙烯产率没有很大的变化，说明银在催化热裂解反应中能够促进正碳离子的生成，又有可能通过氧化-还原作用部分改变反应机理，促进了自由基的生成，并且由于银对烯烃的吸附很弱，其氢转移反应和脱氢、加氢活性比较低，有利于烯烃产率的提高。

Thermal protective material should be provided with characteristics of low ablation recession rate, large ablation enthalpy, high thermal shock resistance and little fluctuation in mechanical properties. Carbonous composite is one of ideal materials to survive in such environment and satisfy these requirments.

由于工作环境的特殊性以及防热结构的重要性，防热材料内部的微观结构特征、超高温热物理性能和力学性能的演化规律以及超高温环境下的烧蚀行为，评价结构的可靠性，已成为防热复合材料制造和应用中所亟待解决的重要理论和工程问题。

Besides, we also discussed the instability of shock wave, the differences between thermal model and non-thermal model, chromospheric cendensation and comparisons with the observations.

文中并就环顶激波的不稳定性、热模型和非热模型的大气演化差异、热模型下色球加热的可能性、色球压缩区的性质、以及与其它模型相比较等方面进行了讨论。

In this dissertation, the theory, thermal analysis and experiment of the conductively cooling ZigZag slab laser is studied, and the main works are as following: 1 Distributions of temperature and stress in the slab and thermal effects are analyzed theoretically.

面向空间应用的全固态激光器在国外已有相应的研究和报道，但在国内对这种技术的研究甚少。

The hydrolytic degradation research results showed that the PDLLA molecular weight was first degraded, then the weight loss happened in normal saline, and the water soluble crystallizable oligomers were formed during the process of degradation. The thermal degradation research results showed that the thermal degradation of PDLLA is a random breaking process, the molecular weight was degraded at range of 100癈~250癈, only above 250癈, the weight loss was found.

通过研究PDLLA的生理盐水降解性能和热降解性能，发现PDLLA在生理盐水中首先发生分子量降解，然后产生重量损失，且降解过程中生成具有晶体结构特征降解产物；PDLLA的热降解是一个无规的断裂过程，在100℃～250℃范围内，PDLLA的分子量迅速发生降解，在250℃以上，低聚物相继发生裂解，产生重量损失。

Using FEM, the coupled action of thermal stress and crustal stress has been taken into account. The regularities of distribution of the horizontal displacement of surface of slope and the shear stress of junction plane between shotcrete and rock are discussed too. According to the analysis, under the combined action of thermal stress and crustal stress, top and foot of slope are liable to be destructed. Ordinary, the destructional form of the top is tensile failure and the bottom is shear failure. There are some time effect of displacement and stress in the surface of slope and distribution of temperature in slope, which agrees with actual measured rules.

采用有限元的方法，考虑地应力与温度应力的耦合作用，分析了在一定的边界温度作用下不同时刻边坡喷层面的水平位移，以及喷层与岩层结合面处的剪应力的分布规律；指出在温度应力与地应力的共同作用下，喷混凝土边坡坡顶与坡脚均为容易发生破坏的地方，通常坡顶的破坏型式为拉张破坏而坡脚则为剪切破坏；边坡内的温度分布、边坡表面的位移与应力的变化均存在一定的时间效应，这一规律与实测规律比较吻合。

Phenolic melamine, novolak, and dicyanodiamide were used as curing agents to prepare the thermoset resins with the control and the phosphate-based epoxy resins. Thermal properties and thermal degradation behavior of these thermoset resins were investigated by using differential scanning calorimetry and thermo gravimetric analysis.

以双氰胺、苯酚三聚氰胺、酚醛树脂为固化剂制备了一系列含磷环氧树脂的固化体系，差示扫描量热法和热失重分析表明，这些热固性树脂具有优异的热性能和热稳定性。

According to thermal characteristics of single component, dilative action was analyzed for mixture from the viewpoint of thermal effect.

通过对典型膨胀体系（即聚磷酸铵、三聚氰胺、季戊四醇）中单一活性物质及其混合物的DSC分析，探讨了不同组分之间热效应的叠加现象和相互作用，从热效应角度分析了膨胀反应，初步探索了复杂膨胀现象中物理化学变化的热特征。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。