查询词典 heat conductivity

However, the electrode material is not satisfied because of its poor corrosion resistance, small conductivity, big friability and poor heat shock resistance.

前人的研究工作中，对于这种电极材料完全按陶瓷材料考虑，采用细粉，以注浆或挤压方法成型；制成的电极材料耐腐蚀性能不理想，脆性大，抗热震性能不好，在电解应用过程中易产生裂纹。

The measurement of thermal conductivity for low temperature frozen soil is important in researching the heat physical characteristics and the frost heaving of soil.

冻土导热系数的测定对于研究冻土热物理性质、土体冻胀特性有着重要作用。

A computer data acquisition and treating system was used in the hot-wire heat transfer device to measure thermal conductivity of nonmetallic materials.

根据目前应用的热线导热仪存在的问题，提出将计算机数据采集与处理系统应用到热线导热仪上测量非金属材料的导热系数，提高导热仪的测试精度和再现性。

A new experimental apparatus has been developed for measuring the thermal conductivity of liquid by the two transient hot-wire method, which is based on the theory of one-dimensional unsteady heat conduction in infinite medium.

摘 要：采用双热线瞬态热线法研制出一套瞬态双热线液体导热系数测试装置，在阐述该测试仪器的基本原理和测试方法的基础上，就该仪器对乙醇、乙二醇、甘油和去离子水进行测试的实验情况及结果进行了分析与比较。

As a new material with many functions: being light, heat insulation, bearing acid and alkali, non-toxic, incombustible, not having fetid odor, the floating bead of pulverize coal ash was firstly chosen to produce light preservation material. In the article, a suitable production way and a new method of using pulverize coal ash systematically were found, which had active effect on stove industry and the refractoriness of light preservation brick with floating bead is 1100~1300℃, the suitable temperature was 400~1150℃, thermal conductivity is 0.105~0.127W.

粉煤灰漂珠作为一种新兴多功能材料，由于它具有轻质、绝热、耐酸碱、无毒、不燃烧、无臭味等特点，将之用作生产轻质保温材料首选材料，并探索出一条合理的生产工艺路线，为粉煤灰的综合利用开辟了一条新途径，对窑炉工业的发展将产生积极的推动作用；生产的轻型漂珠保温砖的耐火度为1100~1300℃，最佳使用温度为400~1150℃，导热系数为0.105~0.127W。

SiC ceramic has been extensively applied in precision bearings, sealing element, steam-turbine rotor, burner nozzle, heat interchanger parts, atomic reactor materials and etc. because of its excellent properties in high temperature mechanical properties, antioxidatio, abrasion resistance, thermal stability, smaller coefficient of thermal expansion, larger thermal conductivity, hardness, thermal shock and chemical corrosion.

SiC陶瓷具有优良的高温力学性能，抗氧化性强、耐磨损性好、热稳定性佳、热膨胀系数小、热导率大、硬度高以及抗热震和耐化学腐蚀等优良性能，被广泛应用于精密轴承、密封件、气轮机转子、燃烧喷嘴、热交换器部件及原子热反应堆材料等，并日益受到人们的重视，应用前景十分广阔。

It is generally recognized that soil thermal conductivity is increased at elevated temperatures due to the enhanced latent heat transfer.

由于水汽潜热传热在高温下的显著作用，高温下的土壤热导率显著高于常温值。

Through analysis of heat penetration depth and thermal conductivity between stainless steel and phosphor bronze, the result shows that stainless steel screens have better refrigeration performance than phosphor bronze ones.

通过对不锈钢和磷青铜丝网材料热渗透深度和热导率的分析，指出在这一温区采用不锈钢丝网的制冷性能优于磷青铜丝网。

The properties of interestinclude RT theoretical density, solidus temperature, thermal expansion,specific heat capacity and thermal conductivity.

物性包括密度、固相线温度、热膨胀、比热容和热导率。

The results show that CO2 specific heat, density, thermal conductivity and viscosity vary abruptly near the pseudocritical temperature.

结果表明，CO2的比热、密度、导热系数以及粘度在准临界点附近的变化非常剧烈。

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％。