导热性

The boundary conditions and the latent heat of heat transfer system have been treated by heat-enthalpy method.

在这样的充填条件下，虽然金属压铸模的导热性很高，蓄热能力很强，但要求在压铸模型腔内获得形状完整、轮廓清晰、尺寸精度高的铸件，必须得选用合理的模具结构和压铸工艺，而压铸模具的尺寸精度和使用寿命在很大程度上取决于其在压铸过程中热应力和其产生的变形。

Indirect methods of estimating thermal conductivity and volumetric heat capacity have been described and employed.

间接方法估算导热性和体积热容量已说明和使用。

The thermal conductivity of wooden is weak.

木头的导热性很差。

Secondly, the thermal conductivity of heatsink better.

其次，散热片的导热性要好。

Thermal conductivity should be physically very professional performance, but we can also determine the easiest way.

导热性应该是物理上很专业的性能指标，不过我们也可以通过简单的方法判断。

The most significant requirement of the material in the application is a low and consistent thermal conductivity value.

应用材料最重要的要求是低导热性值，并且是相容一致的。

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 columniform samples are made with the pressure of 150?MPa that contain graphite,Al 2O 3,SiO 2 and MgO powder.With samples heated at 1?420?℃,1?500?℃ and 1?600?℃ for 4 hours,MgAlON and 21R-AlN Sialon are synthesized by carbothermal reduction nitridation in the sample,MgAlON and 21R-AlN Sialon occure at 1?420?℃.With tempreture rising to 1?600?℃,MgAlON and 21R-AlN Sialon are increasing.

与高温氧化物相比，碳由于熔点高，热膨胀系数小，导热性好，热稳定性和化学稳定性好，不易被液态金属和熔渣润湿等特点，而成为优质耐火原料，使耐火材料在抗熔渣侵蚀和抗热震等性能方面得到质的飞跃。

The relatively constant values of open circuit voltage suggest the electrolyte layer withstands thermal shock due to high thermal conductivity and excellent ductibility of the metal substrate.

相对恒定的开路电压显示，电解质层经受住了热冲击，此受益于金属支撑体良好的导热性和延展性。

The Ultra-Fine-Grained copperwith fine structure performs excellent properties,such as ductibility,electrical conductivity and heat conductivity and so on.It has become an important raw material in the following industrial departments as electric apparatus instrument,chemical industry, shipbuilding,aviation and machinery,etc.,and has wide application prospects.

超细晶铜材因具有微小的细晶结构而表现出了优异的延展性、导电性以及导热性等性能，已经发展成为了电器仪表、化工、造船、航空、机械等工业部门中的重要原料，具有广阔的应用前景。

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％。