微热的

Study on bond and diamond of diamond core drill bit for reinforced concrete;2. Also glass ceramic is used as the bond of CBN grinding wheel by examining the properties of new bond .

研究了微晶玻璃中加入低熔物、成核剂后对微晶玻璃热处理曲线、微晶量及微晶体尺寸的影响，并通过测试改性微晶玻璃的软化温度和热膨胀系数对CBN磨粒的把持强度，进而将微晶玻璃用作CBN砂轮结合剂的作用作了研究，经过在数控凸轮轴磨床上的试验证明，微晶玻璃结合剂的CBN砂轮的磨削效果很好。

In order to study the nonuniform temperature rise and thermal effect in the Yb:YAG crystal,based on the theory of semi-analytical thermal analysis and working characteristic analysis of Yb:YAG microchip with super-Gaussian beam end-pumping and back-face cooling,a new solution of heat conduction equation was introduced and the general expressions of temperature field,thermal distortion field and additional optical path differences of Yb:YAG microchip were obtained respectively.

为了研究抽运光在Yb：YAG晶体内产生的非均匀性温升以及引起的热效应问题，以半解析热分析理论为基础，结合超高斯光束端面抽运、背向冷却Yb：YAG微片工作特点分析，采用热传导方程一种新的求解方法，得出了Yb：YAG微片内部温度场、热形变场、附加光程差的半解析计算表达式。

Diopside crystals in fluosilicate glass-ceramics tend to lower thermal expansion coefficient, while richterite crystals in fluosilicate glass-ceramics tend to increase thermal expansion coefficient.The lowest thermal edpansion coefficient of K2O-MgO-SiO2-CaF2 fluosilicate glass-ceramics is 78.4×10-7(20-300℃), while the highest thermal expansion coefficient of this glass-ceramics is 85.6×

透辉石结晶相的含量增加使微晶玻璃的热膨胀系数降低，与此相反碱镁闪石结晶相的含量增加却使微晶玻璃的膨胀系数增加。K2O－MgO－SiO2－CaF2系统氟硅酸盐微晶玻璃的最小热膨胀系数为：78.4×10－7（20～300℃）；最大热膨胀系数为：85.6×10-7（20～300℃）。

Results When scanning speed of frequency-tripled Nd : YAG laser was no more than 80 mm/s, the thermal damage rate was lower, and the aperture size of microperes varied indistinctively.

结果激光束扫描速度小于或等于80mm/s，热损伤率较低，微孔孔径变化不明显；随着激光束扫描速度的加快，热损伤率增大，孔径随之增大；当扫描速度加快至500mm/s，孔径开始缩小；当扫描速度为600mm/s，激光束不能穿透真皮基质形成微孔。

As a new technique in the field of microchannel phase-change heat transfer , micro capillary grooved heat sink can drive fluid flow by capillary force and creat enhanced evaporation heat transfer conditions by promoting the formation of an extended meniscus in the three-phase contact-line region of a microgroove.

作为一种新兴的微通道相变换热技术，毛细微槽群蒸发热沉由于能依靠毛细力驱动液体流动，并易于在微槽内三相接触线区域促进扩展弯月面薄液膜的形成，创造高强度的蒸发换热条件，因而能够被用来实现极高换热系数和热流密度的换热过程。

Glass ceramics with α cordierite(2MgO·2Al 2O 3·5SiO 2) as main crystal phase, having excellent dielectric property, are perfect materials for microwave parts of a medium apparatus However, the thermal expansion coefficient of the material is not high enough for some special applications Now, a novel glass ceramics with suitable thermal expansion coefficient (47 7×10 -7 / C) and excellent dielectric property (ε=5 1,tgδ0 -3 ) was developed Crystallization process and the th...

本文以堇青石微晶玻璃为研究对象，首次研制得到了一种低介（ε＝ 51）、低损耗（tgδ＜10－ 3）、热膨胀系数（46 ～48 ×10－ 7' C）能与其它器件相匹配的新型微晶玻璃介质材料通过 X射线衍射分析，扫描电镜观察等测试手段，研究了该材料的晶化过程和热膨胀系数的变化规律发现样品的热膨胀系数随温度的变化行为是与样品中析出的晶相种类及析出量随温度的变化规律相对应的

In this paper mainly predictive expressions for porous materials are described.The thermal conductivities of rock wool and calcium silicate insulating materials havebeen calculated by these expressions,however,it has been found that there is somedeviation of calculated values from measured data for these insulating materialscontaining structural water.The effect of the structural water on thermal conductivityhas been studied by means of TG-DTA curves of rock wool and calcium silicateinsulating materials,and...

本文介绍了预测多孔材料导热系数的主要计算方程，通过岩棉保温材料和微孔硅酸钙保温材料导热系数的预测，指出这些方法在预测含有结构水的微孔硅酸钙保温材料导热系数时，与实测值会有较大的偏差，进而利用岩棉和微孔硅酸钙保温材料热重和差热曲线，研究了材料结构水对其导热系数的影响，提出了预测含有结构水的多孔材料导热系数的修正方法，其结果与实测值相当吻合。

Two novel fractal network microchannel heat sinks are originated, namely, the biomimetic fractal tree-like microchannel net born of mammiferous aspiratory system and the biomimetic fractal comby microchannel net born of natural honeycomb.

首次提出并加工出了树状分形结构微管道网络换热器和仿蜂巢结构微管道网络换热器；分别对2种硅制分形结构微管道网络换热器的流动与换热特性进行分析，并与平行阵列型微管道换热器进行了对比。

The infrared spectra indicate that polyurea microcapsules have been successfully synthesized;all the TG thermographs show microcapsules containing n- hexadecane can sustain high temperature about 300 ℃ without broken and the DSC measurements display that all samples possess a moderate heat of phase transition; thermal cyclic tests show that the encapsulated paraffin kept its energy storage capacity even after 50 cycles of operation.

红外谱图显示合成了聚脲微胶囊，热重曲线表明含正十六烷的聚脲微胶囊能够耐受大约 300 ℃高温，差示扫描量热测试表明所有样品均具有合适的相转变热，冷热循环实验揭示微胶囊能够维持储热容量不衰减。

So the technique of uncooled microbolometer infrared imaging has become one of the main points from now on. In the paper uncooled microbolometer infrared imaging system is studied from focal plane character, image dealing and application. The details are in the following: On uncooled microbolometer infrared focal plane aspect: first, the work principle of microbolometer, manufacturing technology of microbolometer infrared focal plane, temperature balance equation of microbolometer detector are analyzed. The performance of microbolometer detector is predicted by model. Second, the infrared focal plane is the core of infrared system, whose quality can determine the performance of the system. It is the precondition that the high quality of every detective unit maintains the qualification of the focal plane. The even degree of detective units has great influence on imaging characters if the other characters of detective units are normal.

本文以非致冷微测辐射热计红外成像系统为对象，从焦平面特性、图像处理和红外系统应用方面展开分析、研究，具体内容如下；在微测辐射热计红外焦平面方面，首先分析了微测辐射热计的工作原理、微测辐射热计红外焦平面的工艺制作、微测辐射热计探测单元的温度平衡方程，根据有关参数对其特性进行建模预测；其次，红外焦平面是红外系统的核心，它的质量的好坏直接决定系统性能，因此保证其各探测单元的高性能是维护焦平面品质的前提，在探测单元其它特性正常的情况下，各探测单元之间特性的均匀程度对系统成像性能有极大影响，为此本文提出自适应滤波多项式焦平面非均匀性校正算法从软件角度解决焦平面的固有的噪声问题。

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。