小热

Results show that the type and the orientation of atriums have a great significance for the thermal environment of the rooms surrounding atriums in selective mode buildings. But in exclusive mode buildings, the main factor is the type of atriums. It is intended that the greenhouse effect of atriums should be aggravated in order to reducing the energy requirement in selective buildings in winter.

主要结论是：⑴在北京地区气候和建造条件下，对于适应性建筑，不同的中庭类型，以及同一类型不同中庭朝向间，主体建筑室内热环境相差很大；而对于控制性建筑，不同中庭类型间主体建筑的室内热环境相差很大，但同一类型间差别较小。

Before conducting the study, students believed that Heat could not influence gas and liquid volume.Matter didn't have thermal expansion. Metal ring's diameter will shrink after heating. The melting quantity of salt is much quicker and faster than sugar in the same temperature or water. Only metals can conduct heat, but not wood, glass, plastics. The quantity of heat is by steam way disappearing.

一、学童对「物质与热」的迷思概念有：(1)「热对气体、液体体积不会有影响」的概念，(2)听过热胀冷缩的语词，但是对原因不明了，(3)金属双圆环加热后，内环孔的口径会变小，(4)同温度且等量水，盐的溶解量比糖多、也比糖快；(5)木材、塑胶、玻璃不会传热，金属才会传热；(6)以为热量是以水蒸气方式散失，(7)冷气机应安装在高处，冷房效果较佳；(8)误认为金属是良好的保温材质。

Therefore, for improving the accuracy of exceed slender axle on turning,must need to do with the lathe fixture and cutting tool for further improvement. In order to reached the requirements of precision machining,in machining process must use follower rest、flexible active thimble、space block and bracket etc fixture and assistive device.

超细长轴在车削加工中承受自身重力、切削力、高速旋转产生的离心力的作用，极容易出现振动与弯曲变形现象，增大轴的几何形状误差，而超细长轴的轴向尺寸较大，直径较小，热扩散性及刚性差，受切削热作用会在轴向发生线性膨胀，若在轴向的伸长量无法得到消除，轴将受迫弯曲，从而影响轴的精度。

The suitability of the different processes was analyzed by observing the weld appearance,studying the microstructure and measuring the mechanical properties of the joint.The results show that a favorable weld can be obtained under the suitable parameters by laser beam welding or tungsten inert gas welding with filler metal.The TIG welded joint has a wider HAZ,and the laser welde...

试验结果表明：在工艺参数合适的条件下，加焊丝TIG焊和激光焊均能获得成形较好的焊接接头；TIG焊接头热影响区较宽，焊缝深宽比小，而激光焊时热影响区不明显，焊缝深宽比大；两种焊接方法所获得的焊缝区组织均为均匀的等轴晶，但激光焊时焊缝组织更细，从而使接头抗拉强度大幅度提高，达到母材的94%左右。

This paper presents the degradation characteristics of two groups of LDD nMOSFETs with different channel length and gate oxide thickness that are fabricated on 0.18μm CMOS technology.

1引言随着CMOS工艺的发展，MOSFET的最小栅长已达超深亚微米，短沟效应及热载流子效应对器件特性的影响更加显著，因而抑制热载流子效应的LDD结构被广泛采用。

Last Labor Day , the weather was very hot when i went home, I had already worn a half-sleeved shirt and a small skirt, but the Labor Day this year I still with long gown and jeans trousers, although a little hot at noon , do not know whether there is a change in this year's weather or I become weak.

记得去年五一回家的时候天气已经很热，我早已换上了半袖衫和小裙子，可是今年的五一我依旧是长衫牛仔长裤，虽然中午热了一小会，可还是不舍的脱下，不知道是今年的天气有变还是我变得弱不经风了。

Meanwhile, with the increasing of on-site potential, the heat conductivity of systems decreases.

同时，格点势越大，同样大小的体系对应的热导率越小，当格点势足够大时，热导率会趋近零。

In order to analyze the thermal cracking products of fuels, we set up a GC analytical system. The gas products, which comprise methane, ethane, ethylene, propane, propylene and other gases, were collected and analyzed by gas chromatography provided with a flame ionization detector . We calculate the theoretical heat sink of n-heptane at the temperature of 600℃ and 800℃. The theoretical heat sink calculation of iso-octane at 700℃ is also related.

建立了用于分析裂解产物的气相色谱分析系统，解决了本研究中对气态裂解产物的分析要求，特别是气态小分子饱和烃和不饱和烃的有效分离；并根据裂解产物的组成及其生成热数据，对正庚烷在600℃和800℃，异辛烷在700℃时裂解的热沉进行了理论计算。

The main structure of Phenolic resin curing is a three-dimensional network linked by methylene between phenols.It is shown in the process of thermal degradation that the thermal degradation of phenols and methylenes,and degradation product of gas small-molecule is a little;While the character of the epoxy resin molecule structure is that the milecule chains contain lively epoxy group,which can be at the end ,middle of the molecule or forms rings structure.

酚醛树脂固化物的主要结构为苯酚之间通过亚甲基连结的一种三维体型网络，因此在热降解过程中主要表现为酚基和亚甲基的热降解，降解后气态小分子产物很少；而环氧树脂的分子结构是以分子链中含有活泼的环氧基团为其特征，环氧基团可以位于分子链的末端、中间或成环状结构。

The product would be developed for primary manifestations of all 4 major serotypes of Dengue virus infection in adults and children.product profile

这种产品会被开发成同时针对成人和儿童登革热患者的抑制四种主要登革热血清型的小分子聚合酶。

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。