结果表明，镀层的沉积速率、镀层成分及镀层的性能都随脉冲频率和占空比的变化而变化；

The results show that the deposit rate, composition and properties of coating change with the variation of duty ratio and pulse frequency.

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作者认为载荷频率的上述影响是因裂纹尖端的应变速率随载荷频率而变化，从而改变了裂纹起始与扩展的热力学条件。

The authors suggest that this effect is due to the change in the strain rate of crack tip metal thus altering the thermodynamics of crack onset and growth.

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结果发现材料的光敏性随频率的增加先降低后提高，晶化率和沉积速率的变化趋势与之相反；

The results indicate that the crystalline volume fraction (X_c) decrease firstly and then increase with the increase of excitation frequency.

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