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Moreover, the influence of heat pipe length on the thermal resistance and the coefficient of equivalent heat conductivity were discussed. Results show the lengths of evaporator section and condensation section play a decisive role on the overall heat transfer performance.

讨论了热管长度变化对热管热阻和当量导热系数的影响,结果表明热管蒸发段和冷凝段的长度对热管的整体传热性能起决定性作用。

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Isotropic pyrolytic graphite is gradually used in aero-engine turbine shaft seals dues to its light weight, high thermal conductivity, low coefficient of friction, low liner expansible coefficient, high heat resistance, excellent thermal shock resistance and good chemical stability.

各向同性热解石墨因为其重量轻、高导热率、低摩擦系数、低线膨胀系数、高耐热性、高耐热震性、良好的化学稳定性等优点逐渐被应用于航空发动机涡轮轴密封件当中。

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Materials with high strength to weight ratio, low coefficient of thermal expansion and high wear and corrosion resistance.

它具有高的比强度,低的热膨胀系数和高的表面强度。

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High silicon aluminum alloy is used in manufacturing automotive engine piston, cylinder body and air condition compressor due to its low expansion coefficient, high hardness and high wearing resistance.

高硅铝合金膨胀系数小、硬度高、耐磨能力强,是制造汽车活塞、汽缸体、空调压缩机涡旋盘等耐磨性零件的理想材料。

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It is shown that socking time is the key factor of effecting the smallest specific resistance, heat treatment in rising temperature process and cool temperature rate in cool process influence on the positive and negative temperature coefficient.

指出,烧结温度是影响材料最低电阻率的主要因素,升温过程中的升温制度、降温方式分别对材料的正、负温度系数影响较大。

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With the increase of temperature, friction coefficient of coatings becomes low and wear resistance of coatings becomes high.

随着温度的升高,涂层的摩擦系数降低,耐磨损性能提高;

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The C/ CF/ Cu composites is higher than pure Cu not only in slide friction wear resistance but also in slide friction coefficient.

碳化和碳气相沉积处理的C/CF/Cu复合材料滑动摩擦磨损耐磨性高于纯铜,而且滑动摩擦因数也高于纯铜。

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According to data of prototype, the author has presented an empirical formula for estimating the coefficient of slide resistance K, the coefficient of consolidation cv and the angle of effective equivalent sliding resistance φ's respectively.

本文根据原型观测资料,对影响计算成果的三个主要力学指标:抗滑系数K,固结系数c v和有效当量剪阻角(?)

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Based on least sequare estimation theory and statistic theory, this paper presents a model to predict AE according to the slope of resistance and the statistical correlation coefficient.

本文提出最小二乘统计算法模型,将计算的槽电阻斜率和相关系数结果用来预报阳极效应,通过对电解槽打壳/加料来控制效应系数。

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Calculation method of flow-in coefficient and resistance loss for radiators in horizontal single-pipe cross-over heating system

船舶螺旋桨进流补偿导管单管水平跨越式系统散热器进流系数和阻力损失的计算方法

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The nickel and iron were selected to be original material. A multilayer structure metal film has been schemed out. This structure enhanced the interface between the films and formed nickel-iron alloy layer, thus largely increasing the temperature coefficient of the resistance.

选择镍和铁作为金属膜材料,设计了金属膜的多层状结构,此结构能够增强膜的界面效应,同时使镍铁层间形成合金层,从而对电阻温度系数的提升有重要作用。

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It was found that under present material and structure of solar photovoltaic module the interior thermal resistance was extremely large that lowered the effect of exterior convective heat transfer coefficient on the heat transfer rate.

研究发现:当前太阳电池组件材料与结构下,太阳电池组件内部热阻太大,导致表面放热系数对于传热的影响减小。

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Taking brittleness coefficient and characteristic length as indexes for evaluation of crack resistance of HSC, the effect of mineral admixtures including fly ash, silica fume and ground slag on crack resistance of HSC is studied.

以脆性系数和特征长度为高强混凝土抗裂性评价指标,研究矿物掺合料(粉煤灰、硅粉和磨细矿渣)对高强混凝土抗裂性的影响。

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Specimens by high-strength bolted slip resistance testing, the extent of the corrosion resistance of its slip coefficient, sliding load and the impact of the ultimate load. Establish the extent of corrosion performance and high-strength bolts connecting the quantitative relationship. 3.

通过高强螺栓连接试件的抗滑移试验,探讨了锈蚀程度对其抗滑移系数、滑动荷载以及极限荷载的影响,建立了锈蚀程度与高强螺栓连接性能指标的定量关系。

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the main identification parameters are armature resistance, d-axis and q-axis inductance and back emf coefficient. the principles of identification and software implementation skills have been elaborated.

主要辨识了永磁同步电机的电枢电阻、交直轴电感以及反电势系数等参数,详细阐述了这些参数的辨识原理及软件实现技巧,辨识结果表明辨识方案的正确性。

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The excess charge carrier in the nonlinear resistance is proposed to be a kind of Brownian particles moving in the environment with space distribution friction coefficient.

提出了非线性电阻中载流子是一类在空间分布型摩擦系数环境中运动的布朗粒子。

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Solving the Fokker-Planck equation of the excess charge carrier the relationship between the Peltier coefficient and the volt-ampere characteristics of the nonlinear resistance has been derived.

解载流子的福克普朗克方程得到了帕尔帖系数和非线性电阻的伏安特性曲线的关系。

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And the biggest influence coefficient is the air resistance and the force generated from sealing.

其中影响系数最大的为空气阻力和密封胶条作用力的影响。

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