导热

The conclusions of this paper can be extended to more complicated situations of non-uniform porous media,thus the principles of heat conduction can be further discovered,which provides more precise methods for engineering calculation.

研究结果可以推广到更为复杂的非均匀多孔介质的场合，可以进一步认识非均匀多孔介质中的导热规律，为工程计算提供更精确的计算方法。

Therefore it can be used for surface hardening and hardening of localised areas of metallic parts by "outrunning" the thermal conduction of heat deeper into the part or to surrounding areas.

因此，可颐于表面硬化，和局部地区的金属部分硬化的&没错&的热传导热深入到部分或周边地区。

At the same time, according to the related theories, theoretical relation of soil water profile was established under the condition of ponded infiltration and limited soil redistribution, the results were verified with measured data and proved to be reasonable.

此外，研究表明，导热率与土壤含水率、土壤水吸力、含盐浓度之间均存在良好的幂函数关系；在取得一定温控条件下的土壤水分与温度分布实测资料的基础上，根据Philip经验方程，通过差分法计算得出温差作用下的水分扩散率，该参数可表示为温度的幂函数形式。

Metals are good electrical conductors with high strength and usually have no porosities for gas permeability.

金属是具有较高的强度、导热性和气密性的良导体。

Metals are good electrical conductors with high strength and usually have not porosities for gas permeability.

金属是具有较高的强度、导热性和气密性的良导体。

The conducting wall in micro-tube preheats the inlet mixture by axial heat transfer. The existence of conducting wall will help to reach full reaction in the micro-tube. As the inlet velocity increases, both the existence of the surface catalytic combustion and the gas phase combustion become the limiting factors on combustion. Wall material and equivalence ratio of hydrogen/air mixture have important influence on catalytic combustion of hydrogen.

计算结果表明：表面催化反应对空间气相反应有抑制作用；在微型管道内，通过导热壁轴向间的传热，预热入口混合气体，使氢气燃烧更加充分；随着入口速度的增大，燃烧过程同时存在着表面催化反应和空间气相反应两种控制因素；管壁材料和当量比对氢气的催化燃烧过程有重要的影响。

Then 4 approaches are used for solving semiconductor thermoelectric problems are proponed:(1) solve basic semiconductor equations directly,(2) solve heat transfer equation with the fitting expressions of thermoelectric transport,(3) approximation of relaxation interval time,(4) characteristic temperature of thermoelectric-pile method.

随后，提出了求解半导体热电问题的4种方法：①直接求解半导体方程组②驰豫时间近似法③利用温差电输运系数的拟合式来求解导热方程④热电堆特征温度法。

Of scuds metals conduct heat most quickly. They are the best heat conductors.

在所有的固体中金属传热最快，它们是最好的导热体。

Since the company has been paying attention to the product quality, the company by "is striving for the survival by the quality, strives for the development by the prestige, manages increases the benefit, take serves makes the backing " as the enterprise objective, makes every effort into the most specialized horizontal-type sterilization pot Manufacturer.under is the horizontal-type sterilization pot's use:because the compressed air is the poor conductor of heat, the situation steam itself also has certain pressure, therefore, in sterilization time elevates temperature in the process, does not admit the compressed air, but sterilizes the pot only after meeting the thermal death point when is in the heat preservation, only then opens the compressed air to enter in the pot, makes in the sterilization pot to increase 0.15~0.2Mpa.

公司一直以来都在关注着产品的质量，公司以&以质量求生存，以信誉求发展，以管理增效益，以服务做后盾&为企业宗旨，力求成为过内最专业的卧式灭菌锅生产厂家。卧式杀菌锅由于压缩空气是不良导热体，况蒸汽本身又具有一定的压力，因此，在杀菌时升温过程中，不放进压缩空气，而杀菌锅只在遇到杀菌温度后处于保温时，才开放压缩空气入锅内，使杀菌锅内增加0.15～0.2Mpa。

Tungsten wire is made by the process of sintered bar, swaging and drawing. Besides its high temperature stability, sagging free, shock resistance and corrosion resistance, it has an excellent electrical and thermal conductivity, a very low thermal expansion up to the highest temperature.

钨丝是由钨坯条经过旋锻及拉伸的方法加工而成的，具有很好的耐高温性能和不下垂性，导电导热性能极好，热膨胀率低，成型性好、稳定性高、耐震性及抗腐蚀性强，具有较好的机械加工性能。

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