查询词典 thermal conductivity

A very low thermal conductivity and water vapor permeability rate.

具有极低的热传导系数和水气透湿率。

Has very low thermal conductivity and water vapor moisture permeability rate.

具有极低的热传导系数和水气透湿率。

By means of"random distribution model"proposed by Woodside, the calculation model of the effective thermal conductivity of Ni catalyst under reactions has been established

以Woodside随机分布模型，建立了反应条件下催化剂有效导热系数的计算模型为

Experimental research on semi liquid lubricant used on worm wheel;2. The Design and the Development of the Calorimeter for Measuring Thermal Conductivity of Liquids;3. Based on the analysis of the flowing liquid it puts forward the mathematic model of Underground Coal Gasification and gives advice to every equation.

依据有关文献和调研资料，对国内外煤炭地下气化的发展历史及现状进行了介绍，阐述了煤炭地下气化的原理，分析了煤炭地下气化"三带"特征，在对煤炭地下气化流体流动分析的基础上，提出了煤炭地下气化场的数学模型并对其中各项的确定提出了建议。

It found how the thermal conductivity of YSZ changes with the adding amount of yttria .

找到了氧化钇加入量变化时YSZ导热性能的变化规律。

An experimental investigation into the effects of pure Ag and AgAu alloys sheath materials on the properties of Bi (2223) multifilamentary tapes is presented in this paper. The experimental results show that the drastic reduction of thermal conductivity and the increase of resistivity by the addition of Au into the Ag matrix can be achieved.

Bi（2223）/Ag及Bi（2223）/AgAu高温超导多芯带材低温下的热导率和横向电阻率实验研究结果表明，采用AgAu合金代替纯银作为包敷材料可以显著降低Bi（2223）高温超导多芯带材的热导率和提高横向电阻率。

The increase of high-pressure sintering temperature and time is favorable for the enhancement of the thermal conductivity of AlN ceramics.

高压烧结温度的提高和烧结时间的延长有助于提高AlN陶瓷的热导率。

Because of the low thermal conductivity of coal and the slow rate of distillation, coking is a slow process.

因为煤的导热性低、蒸馏的速度慢，所以炼焦的过程较慢。

The carbon foam were prepared by self-bubbling at high pressure from AR pitch added sodium dodecyl benzene sulfonate and Span-40, respectively. The bulk density, pore rate, compressive strength, thermal conductivity at room temperature and crystallitic parameters of carbon foam were measured. The rheological properties of AR pitch and pore structure of carbon foam were investigated.

以十二烷基苯磺酸钠和Span-40表面活性剂为添加剂，AR沥青为原料，制备炭素泡沫材料，测定了材料的体积密度、显气孔率、压缩强度、常温热导率以及微晶结构参数，研究了添加表面活性剂后AR沥青的流变性能和炭素泡沫材料孔胞结构的变化。

In this thesis, the engineering property of the frozen earth in the frozen railway roadbed in Anduo section (between DK1561+975-DK1562+530) of Naquhe region of Qinghai-Tibet railway was studied indoor. The change of engineering property of the earth samples with different water content , density and temperature were researched. The influence of concentration of the diffluent salt to the frozen strength was pilot studied. The thermal conductivity of the soil was experimented. With the result and data of the tests, the earth temperature field in Anduo section was demonstrated by numerical analysis, the structure parameter of the spall revetmentd and the rubble berm was given, the stability of the railway roadbed was evaluated.

本文以青藏铁路格尔木-拉萨段那曲河地区安多段(DK1561+975～DK1562+530)冻土路基为对象，对该地区冻土的工程性质进行了室内试验研究；对不同含水率、不同压实度的土样，研究在特定温度变化范围内工程性质的变化：初步分析了易溶盐含量对冻结强度的影响：测试了土样的导热系数；在室内土工试验的基础上，根据测试结果和数据，对安多段区域地温场进行了数值模拟，分析了该工点区间内合理片石护道、碎石护坡结构参数，评价了路基稳定性。

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％。