This article gave the measuring principle, formula and method of waters expansion coefficient by using density value of pure water in different temperature.
利用不同温度下纯水的密度值，给出了水的体胀系数的计量原理、公式和方法。
The results showed that the temperature, average current density, frequency, reverse pulse coefficient and duty cycle had great impact on the microstructure of coatings.
结果表明，温度、平均电流密度、频率、逆向脉冲系数及占空比对镀层性能和微观形貌有较大影响。
The results showed that the temperature, average current density, frequency, reverse pulse coefficient and duty cycle had great impact on the microstructure of coatings.
结果表明，温度、平均电流密度、频率、逆向脉冲系数及占空比对镀层性能和微观形貌有较大影响。
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