查询词典 conduction

Based on the theory of heat conduction a strict mathematical method is used. In the paper, error analysis for different heat exchange coefficients is made.

在设计和运行中，正确地分析转子温度和应力的变化规律，对于实现机组的安全经济运行具有重要的意义。

More than 30 papers have been published and 5 invention patents have been possessed. Major achievements include: 1 Completion of solar dish power system overall design and equipment commissioning; 2 Completion of parabolic trough power system overall design and equipment commissioning; 3 Parabolic trough concentrator overall design and instantaneous simulation of thermal-technical performance; 4 Overall design of heliostat and wind load simulation; 5 Quick evaluation methods for thermal performance of solar collector; 6 Design of dehumidifying air conditioner using solar evacuated air collector; 7 Research on radiation, flow, conduction coupling and heat exchange on complex ship surfaces

其主要学术贡献为： 1MW级太阳能塔式电站总体设计； 1完成了太阳能碟式聚光发电系统的总体设计和设备调试； 2完成了太阳能槽式聚光发电系统的总体设计和设备调试； 3槽式太阳能聚光器的总体设计与热工性能的瞬态模拟； 4太阳能聚光器定日镜的总体设计和风载荷模拟； 5了太阳能集热器热性能快速评价方法体系； 6太阳能真空管空气加热除湿空调系统的系统设计和设备定型； 7复杂船体表面的辐射、流动与导热耦合换热的研究。

For reactor, the point reactor kinetics equation with six-group delayed neutrons is used and influence of coolant's and fuel's temperature is considered, conduction model of one dimension and single-channel model is used in thermal and hydraulic calculation, third-order Hermite polynomial is used to solve the point reactor kinetics equation.

对于反应堆，在物理计算中采用了带有六组缓发中子的点堆方程，同时考虑了多普勒效应及冷却剂温度效应对反应性的影响；在热工水力计算中采用了一维的热传导模型与单通道模型；在求解点堆方程中采用了Hermite插值的方法，克服了点堆方程的刚性问题。

Norm is obtained. Fourthly, we propose a new mesh adaptation algorithm based on the Hessian matrix, which is suitable for 2-D 3-T radiation heat conduction equations.

第四，本文从基于Hessian矩阵的网格自适应理论出发，设计了一种适用于二维三温辐射热传导方程的网格自适应算法。

The results show that the compound conductive fiber has typical structure of sheath-core consists of black greened polyaniline electric conductive deposition as the skin and the white polypropylene matrix fiber as the core, which makes the compound fiber preferable physical mechanical property. The intensity and the elongation ratio of the electric conductive fiber are decreased but the thermal stability is enhanced after modified. The compound fiber has the good acid resistance but poor base resistance. The thermal stability of the compound fiber prepared by 4-methyl-benzene sulfonic acid is better than that prepared by hydrochloride acid. Moreover, the compound fiber can be re-doped by other organic or inorganic acid after freed from the adsorbed acid. Furthermore, the electric conductivity of the compound fiber decreases with the temperature increasing but hardly changed with the humidity. The adsorptive ability and therefore the content of the polyaniline, the constant of electric conduction, and the durability of the compound fiber can be enhanced by thinning the diameter, section heteromorphosis, section heteromorphosis and plasma treatment of the surface or blending with COPET of the fiber.

结果表明：复合纤维是聚丙烯与聚苯胺的共混体系，具有典型的皮芯型结构，皮层为墨绿色的聚苯胺沉积层，形成连续的导电通道，芯层为白色的聚丙烯基质纤维，提供物理机械性能；导电改性后纤维的强度、强力和伸长率均有下降，但热稳定性得到提高；复合纤维的耐酸性比耐碱性好，以对甲苯磺酸做掺杂酸比盐酸掺杂聚苯胺热稳定性好，脱掺杂后的复合纤维，可用其它无机酸或有机酸进行再掺杂；复合导电纤维的电导率随温度升高降低幅度较大，但几乎不受湿度影响；基质纤维细旦化、截面异形化、表面等离子体处理或共混COPET等改性处理均能提高纤维的吸附性，进而提高复合纤维表面聚苯胺含量、电导率和耐久性。

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。

In the present paper, experimental and numerical investigations have been performed to suppress the flow separation of a hydrofoil with a certain attack angle in the low-conduction fluid.

利用以转动水槽为主的实验系统和基于双时间步Roe格式的数值方法，对翼型绕流的电磁控制进行了实验和数值研究。

The conclusion results are positive. The shock wave with viscosity and heat conduction is validated a hyperbolic tangent type of soliton wave.

证实了有粘性和导热的激波是一类满足Sine-Gordon方程的双曲正切型孤立波。

In our project, graphite is adopted as medium for thermal conduction which combines the advantages of heating plate and immersion heater.

同时，在仪器的研发中引入蓝牙通讯技术，实现远程及点对多的控制模式。

Limited features in advantages of low heat conduction coefficent, favorable silence effect, incombustibility innoxiousness, corrosion-resistance, aging-resistance, easy installation, light weight, good heat preservation and long lifetime compared with other types heat preservation wind pipes, and is widely applied in industrial and civil center air conditioning area.

上海唐博复合风管有限公司生产的TB系列复合玻纤风管，与其他保温风管材料相比，具有导热系数低、消音效果好、不燃、无毒、耐腐蚀、不易老化、安装简捷、重量轻、保温性能好、寿命长等一系列优点，在工业及民用等中央空调领域中正受到广泛应用。

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％。