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Female friends birthday, what gift is good
High school, female, lively, the relationship is a bit ambiguous. What gifts are good?
Why does lithium battery capacity become lower in winter?
Since lithium-ion batteries entered the market, they have been widely used due to their advantages of long life, large specific capacity, and no memory effect. Low temperature use of lithium-ion batteries has problems such as low capacity, serious attenuation, poor cycle rate performance, obvious lithium deposition, and unbalanced lithium extraction. However, with the continuous expansion …
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