导致增加硬度
Lead to an increase in hardness
以上为机器翻译结果，长、整句建议使用 人工翻译 。
加强了铁氧体，导致增加硬度。
It strengthens the ferrite, causing increased hardness.
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实验结果表明：增加超声波功率，导致镀层硬度增大。
The experimental results show that the increase in ultrasonic power leads to the increase in hardness of the coating obtained.
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