变热

Experimental accuracy and repetition of FBG temperature sensitivity and compensation were discussed.have selected several materials which has bigger coefficient of expansion to do packaging components, have made many temperature experiments, there have not flaws, such as aging, crackle, absciss layer, packaging materials have good temperature sensitivity and compatibility with optical fiber;have designed the simple and practical packaging components, have performed a serials of experiments about accuracy and repetition of FBG wave-length, have obtained the first step conclusion;have analyzed the result and made comparison between the result of different experiment, have summarized the best packaging effect and several rules to reduce mistskes.

本文所做的主要工作包括以下几个内容：一、选取了常见的热膨胀系数大的材料制作封装元件，经过多次一80℃到80℃反复测试，封装元件没有出现老化开裂、封装裂纹、空洞、离层等缺陷，封装材料具有良好的温敏稳定性及复用性，与光纤相容性较好；二、对光纤光栅进行简单、实用的封装处理，就封装效果的优劣性、波长测量的准确度、重复性和封装时产生的波长损失等方面进行了一系列的实验，得出了初步的结论；三、对温敏和温度补偿式封装的实验数据进行了详细的分析和对比，从数字上对温变过程中光纤光栅中心波长的改变及温变曲线进行了定量的分析，在大量实验数据分析结果的基础上，总结出哪种材料封装效果更好，以及如何有效的减小实验误差。

Acetamide was imbedded into the net of silicon dioxide to preparing phase changing composite for heat storage by sol-gel method.

采用溶胶-凝胶法将有机相变材料乙酰胺嵌入到SiO2网络空间内，制备了复合储热相变材料。

The fatty acids/SiO2 composite phase change energy storage material is prepared with the eutectic mixture of capric acid and lauric acid as phase change material by sol-gel method.

选用十酸和十二酸2种脂肪酸作为相变材料，采用溶胶－凝胶法制备脂肪酸／SiO2相变蓄热复合材料。

The technology specification for heating boiler, top air fan, air conditioning unit, start-up boiler, condensate pump, water ring vacuum pump, high-low bypass, automatic filter, closed cooling water heat exchanger, closed circulating cooling water pump, heavy oil treatment line, industrial waste water treatment equipment, water technology pump, steel valve gate, circulating water pump, oily waste water treatment, rotating type screen, chemical water treatment, UPS, generator-transformer unit fault wave recording, generator, main transformer and HV unit auxiliary transformer protection, synchronizing device, fast changeover, DC panel and high frequency switch and battery.

采暖锅炉，层顶风机，空调机组，启动锅炉，凝结水泵，水环式真空泵，高低旁路，自动滤水器，闭式冷却水换热器，闭式循环冷却水泵，重油处理线，工业废水处理设备，水工专业水泵，钢闸门，循环水泵，含油污水处理，旋转滤网，化学水处理，UPS，发变组故障录波，发电机，主变压器及高厂变保护，同期装置，快切，直流柜及高频开关，蓄电池等设备的技术规范书。

Combining the functional analysis method with the heat conduction differential equations the finite element mathematic modal as the solution to the period cyclic symmetric structure temperature field was constructed.

试验研究了SiCp_A356复合材料在20℃～450℃之间的拉伸力学性能、循环应力应变响应以及应力松弛行为，以经典的弹塑性增量理论作为塑性模型、以经典的Dom幂率方程作为蠕变模型，引入温度效应，建立了适用于制动盘结构分析的热弹塑性-蠕变本构模型。

A two-dimensional phase change heat transfer model was established in the polar coordinates and cylindrical coordinates by enthalpy approach.

本论文针对相变蓄热的问题，通过引用焓法建立了平面极坐标与二维柱坐标下数值求解相变传热问题的数学模型。

Because a part of hydroxyl group in methyl cellulose were substituted by trimethylsilyl group , the product could be dissolved in amounts of common organic solvents, such as chloroform, xylene and so on.

通过甲基纤维素与六甲基二硅亚胺的反应，成功地实现了对水溶性物质甲基纤维素醚三甲基硅化的改性；红外光谱验证了反应的发生，核磁共振氢谱确定了三甲基硅甲基纤维素的取代度；纤维素醚上的部分羟基被三甲基硅化后取得了在普通溶剂中的良好的溶解性，且随着取代度的增加，在非极性溶剂中的溶解性逐渐变好；通过热失重实验，对其热稳定性进行了测试。

The welding deformation and residual stress are decreased evidently.The dimensional stability and service security of the welding structure are increased obviously.The impact absorbing energy of weld is improved by 21% under vibratory weld conditioning. And the effect of mechanical vibration on the impact absorbing energy of weld is greater than that of HAZHAZ are refined distinctly. The fusion area and overheated zone are narrowed. And the dimension of Widmanstaten structure minishes or disappeares.

试验结果表明：振动焊接后，焊接变形和残余应力明显降低，焊接结构尺寸稳定性和使用安全性大大提高，振动焊接后焊缝试样的冲击吸收功平均值比常规焊接下冲击吸收功的平均值提高了21%，且振动焊接对焊缝冲击性能的影响要明显大于对热影响区冲击性能的影响；振动焊接使得焊缝和热影响区的组织明显细化，熔合区和过热区变窄，魏氏组织减小或消失。

During high pressure nitrogen quenching, besides the phase transformation process, the synthetic surface heat transfer coefficient is smooth. With increasing of nitrogen pressure, the synthetic surface heat transfer coefficient is improved.

计算结果表明，除相变阶段外，高压氮气淬火时的表面综合换热系数比较平稳，随着氮气压力的提高，表面综合换热系数呈总体增大趋势。2。

The fused quartz brick is used as hot repair materials of glass furnace because of its low thermal expansion coefficient.

由于熔融石英砖的热膨胀系数小，它在玻璃熔窑上被作为热修补材料使用，从而也存在和其它耐火材料一样被侵蚀，引起蚀变，并在玻璃液中产生疵点的现象。

With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务，乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐，因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。