微热

The experiments for determining the mechanism and kinetics of catalytic pyrolysis reaction for a simple petroleum feedstock, were carried out in a batch micro-reactor using Daqing light gas oil. The results showed that carbonium and free radical reactions were the key reactions in catalytic pyrolysis. The carbonium ions were induced by catalytic reaction, whereas free radical reaction was predominantly due to thermal cracking.

首先在重油微反装置上考察大庆减压馏分油催化裂解反应产品分布，并将反应结果与相同温度范围内的热裂解反应相比较，二者的产品分布随温度等操作参数的变化规律明显不同，进而推断催化裂解反应过程为正碳离子反应机理和自由基反应机理并存；并建立了大庆减压馏分油催化裂解消失动力学模型，求得了化学反应速率常数。

Exploiting the high temperature fluxion character of grate cooler clinker, the filling state during entire colling process can be determined. Then impact on the control model can be analyzed introducing by the fluctuating of the clinker's thinkness and diameter. a modeling method with three dimensions division is proposed. The Longbeige step-changing dichotomy is used to optimize the division time toward z direction. Then the mass balance and heat balance analysis for every cell derived from clinker's three dimentions division is presented. Finally, the clinker temperature field's unitary control model with deducing in x, y, z direction separately is constructed.

从篦冷机熟料的高温流动特性入手，确定熟料在流动过程中的填充状态，分析熟料厚度与颗粒直径波动对控制模型影响，提出对篦冷机熟料采用三维分割的思想进行建模；设计了基于龙贝格变步长的三维分割算法，对z方向的分割次数进行优化；分析流动状态下熟料微元的质量平衡与热平衡关系，分别沿x、y、z方向递推，建立篦冷机熟料整体控制模型。

In this dissertation, MDS has been used to predict the thermodynamic properties and transport coefficients of an argon system with Lennard-Jones potential to reveal the propagation mechanism of a disturbance in the medium, to discuss the interface characteristics under saturated condiction.

微尺度条件下的换热、快速加热以及某些相变传热等现象用传统的研究方法和研究手段难以进行研究，而分子模拟技术则有可能成为研究这些传热现象的一种有效手段。

What arrived, however, were small pads of meat wrapped incrisp bacon, and little potatoes with their skins on, which had been rolled in hot butter and crisped in thepan.

可上来的却是脆熏猪肉包着的小肉块和拌着热黄油在锅里炸脆的带皮小马铃薯，还有微甜的胡萝卜条。

Aspergillus WQ is selected to explore the factors which affect producing enzymes. The best carbon source is crystallitic cellulose+straw powder, the best nitrogen source is peptone+yeast abstract cream, the best growing temperature is 35℃and the best initial pH is 5.5. WQ can produce the largest quantity of enzymes after being cultivated eight days.

从50℃左右牛粪自然堆肥中筛选了一株产酶量较高的曲霉WQ，对影响其产纤维素酶的因素和酶的热稳定性进行了初步研究，结果表明：液体发酵时，该菌最佳碳源是微晶纤维素+稻草粉组成的复合碳源，最佳氮源是蛋白胨+酵母膏的复合氮源，最适生长温度为35℃，最适起始pH值为5.5，在生长第8天产酶量最高。

With cellulose as the skeleton, gelatinized cassava starch solution and tungsten carbide were used as porogenic agent and inert densifier, respectively. The matrix prepared showed good sphericity and a logarithmic symmetrical distribution of particle size.

取得的主要结果如下：纤维素基复合层析基质的物理功能化：以再生纤维素为骨架，碳化钨粉末为增重剂，糊化木薯淀粉为制孔剂，采用&反相悬浮热再生法&和成球后去除淀粉方法，成功制备了纤维素/碳化钨复合微球，可用作层析介质的基质。

The effects of high temperature tempering on the microstructure and mechanical property of an ultra-low carbon bainitic steel have been investigated by means of transmission electron microscopy, scanning electron microscopy, micro-hardness measurements and dilatometry.

本研究以穿透式电子显微镜、扫描式电子显微镜、微硬度量测及热膨胀仪分析超低碳变韧铁合金钢高温回火之显微结构及机械性质变化的特性。

This β-eucryptite phase begins to dissolve at 1320℃ or above where the tielite (Al2TiO5) is apparently unstable and decomposed to corundum (Al2O3) and rutile (TiO2). Thirdly, in this dissertation, the influence of composition, crystallization temperature, and time on CTE were investigated detailedly.

然后，对制得微晶玻璃材料的热膨胀性能及力学性能与材料组成的关系，成核剂对玻璃析晶性能和膨胀系数的影响，以及晶化温度和时间的关系进行了分析。

And by mean of DTA, XRD, SEM techniques, the research work emphasized on the crystal phases structure, thermal expansion, and mechanics capability of the β-eucryptite glass-ceramics.

通过DTA、XRD、SEM等研究手段，对β-锂霞石负膨胀微晶玻璃析晶性能、显微结构、热膨胀性能及力学性能等问题开展了较深入的研究。

It was proved by the DSC and heatable stage polarizing microscope that in the temperature falling process, the initial temperature of the crystallite was 5 - 20 ℃ lower than that of the reference sample.

测试结果显示：这种复合材料的纺丝温度降低了15℃左右，DSC和热台偏光显微镜实验证实了在降温过程中，微晶出现的起始温度比对照样品降低了5～20℃。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐