一条上扬曲线，刻录5年巨大跨越：中国经济总量连续跨越110万亿元、120万亿元、130万亿元、140万亿元关口；人均国内生产总值连续3年超过1.3万美元；粮食产量连续两年站稳1.4万亿斤台阶；制造业增加值连续16年稳居世界首位……
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Like the first test, this one was also conducted by state-owned VTT Technical Research Centre of Finland. The team set out to determine how well Donut Lab's cells held up under extreme heat, which has been known to adversely affect traditional lithium-ion batteries. The results show that not only can the Finnish startup's solid-state battery still discharge energy under conditions of up to 100 degrees Celsius (212 degrees Fahrenheit), it actually gains capacity.