查询词典 heat conductivity

Copper has great electrical and heat conductivity and is sensitive to corrosion from a variety of agents.

铜有很大的电气和热导率和敏感腐蚀从各种代理商。

It is brittle and sharp and has electrical and heat conductivity in some degree.

用其制作磨具，使用于加工抗张强度低的金属和非金属材料。

From the results the author thought that due to the lack of high quality insulator with high heat conductivity.

经分析认为，由于缺乏高性能的导热绝缘材料，目前所制作的空心阴极的冷却效果不是很好。

Invar 36 is a kind of low expansion alloy, and it is difficult to machine because of its plastic, ductility and low heat conductivity. During Grinding, the part surface is easy to burn and wound for high grinding temperature and wheel adhesion.

Invar 36是一种低膨胀合金，其塑性大、韧性高、热导率低，磨削时所产生的磨削力大，磨削温度高，工件表面易于烧伤和划伤，对砂轮的粘附较严重，属于典型的难于加工材料。

It's very important that the inwall of crystallize should adopt large-coefficient of heat conductivity material .

结晶器内壁采用导热系数大的材料对稳定连铸十分重要。

It can realize full automatic controlling, data collection and disposal by embedded OS C /OS-Ⅱ. The heat conductivity can be disp layed and p rinted out. The measure p recision accords with the nation standard.

该方法是通过嵌入式C /OS -Ⅱ实时操作系统和友好的人机界面，实现仪器的全自动控制、数据采集和处理以及导热系数的计算、显示和打印输出。

The material of the invention has lower heat conductivity and higher coefficient of thermal expansion compared to the traditional zirconium oxide which is solidified by 7-8% yttrium oxide.

与目前普遍使用的7～8％氧化钇稳定的氧化锆相比，该材料具有低的热导率和高的热膨胀系数。

Because of the adulteration of rare earth ion and the lamellar structure of the calcium and titanium mine, the material has lower heat conductivity and higher coefficient of thermal expansion compared to the zirconium oxide which is stabilized by 7-8% yttrium oxide.

由于稀土离子的掺杂及其自身的层状钙钛矿结构，该材料与目前普遍使用的7～8％氧化钇稳定的氧化锆相比具有更低的热导率和更高的热膨胀系数。

The viscosity and heat conductivity of magnetized ammonia-water with magnetizing intensity of 0 to 0.14 [0.26] tesla and magnetizing time of 10 to 30 minutes are measured by the method of Engler viscosity measurement and transient double wire measurement.

分别采用恩氏粘度法和瞬态双热线法测量装置，对不同磁化强度和磁化时间的氨水粘度和导热系数进行了测量，氨水溶液浓度为25%，磁化强度范围0～0.26T，磁化时间10～30min。

These concrete worksare the following:1, a new heterogonous SHS model had been proposed, which first included all the relativematerials characters, such as reactants particle sizes, changeable heat-conductivity and massdiffusion during SHS and so on, and its chemical reaction characters, initial combustion status.This new model made a more precise prediction about the SHS combustion way and itsTechnological characters possible.2, with the heterogonous SHS model, lots of combustion way had been imitated by changesystems relative factors and the rule of the combustion way change had also been studied,chemical reaction in these systems was controlled by a single mechanism.

在该模型中，首次将体系的微观不均匀特性、体系的基本物性及燃烧过程中的化学反应机理与整体燃烧动力学行为联系在一起，从而为更加准确地预测和控制SHS体系的燃烧行为，优化SHS的工艺过程奠定了理论基础。2、采用非均质燃烧模型，通过对相关参数的改变，模拟SHS燃烧过程中的各种燃烧行为，并研究了燃烧行为变化的规律。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。