经过2000次的充放电循环后，比容量基本没有衰减。
After 2000 times charging and discharging circulation, the specific capacitance basic has not weakened.
SEM研究表明30次充放电循环后薄膜锡负极出现龟裂现象。
SEM investigations revealed that the tin thin film electrode appeared serious cracks after 30 charging and discharging cycles.
实验结果表明，高倍率充放电循环使电池性能下降的主要原因是负极合金性能的恶化。
It proved that the main reason of lapse of Ni-MH batteries after high-rate cycles is the fading of negative electrode alloy performance.
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