Copper, with its extremely high coefficient of expansion, expands more during heating than steel does.
由于铜的膨胀系数特别高，铜在加热时比钢膨胀得多。
Copper and plastic coefficient of expansion, and, therefore, more close to the plastic used in electroplating electroless copper plating coating layer as conductive.
金属铜与塑料的膨胀系数比较接近，因此，在塑料电镀中常用化学镀铜层作为电镀的导电镀层。
The form of copper occurrence in contaminated soil in a smeltery site was discussed comparatively by continuous chemical digestion, with the coefficient of biologic effectiveness to copper calculated.
采用化学连续浸提法对冶炼厂污染土壤中铜的赋存形态进行了比较分析，并且计算了铜的生物有效性系数。
It can clean steel, copper, aluminum and ceramic material with high safety coefficient and little corrosion to metal.
可清洗钢铁、铜、铝及陶瓷材料，对金属腐蚀性小、安全系数高。
The ambipolar diffusion coefficient of charged copper species in copper vapor laser is theoretically deduced.
推导了铜蒸气激光器带电粒子的双极扩散系数。
A formula of combined heat transfer coefficient was obtained based on the analysis of heat transfer of copper staves.
通过对铜冷却壁的传热过程分析，得到热面复合传热系数的计算公式。
Diffusion coefficient of copper in barrier coating is a considerable parameter for evaluating barrier ability.
铜在防渗铜镀层中的扩散系统是评价镀层防渗铜能力的重要参数。
The copper-clad invar sheet material prepared by use of said method has the low coefficient of expansion, good radiating capability, large capacitance and good electromagnetic screening effect.
利用本方法制备的覆铜因瓦片材，具有热膨胀系数低，散热性好，电容量大，电磁屏蔽性好；
Low coefficient of surface friction, besides properties of general modified polyes enameled round copper wire.
除具有普通的改性聚酯漆包线的特性外，还具有较小的表面摩擦系数的性能。
Low coefficient of surface friction, besides properties of general modified polyes enameled round copper wire.
除具有普通的改性聚酯漆包线的特性外，还具有较小的表面摩擦系数的性能。
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