Notice that these “serial numbers” are very similar to the ones we embedded in the single-use credentials above. Each Resource (website) can keep a list of each SN value that it sees, and sites can reject any “show” that repeats a serial number. As long as the User never repeats a counter (and the PRF output is long enough), serial numbers should be unlikely to repeat. However, repetition becomes inevitable if the User ever “cheats” and tries to show the same credential N+1 times.
done, but because these machines were the raddest.，更多细节参见电影
另一个窗户纸则是热效率。增程市场热衷于卷热效率这个纸面参数。友商动辄44%、45%的数据很唬人，但他们没告诉车主，这个“最高”往往只有一个点，只有在实验室那个特定的转速和负载下才能跑出漂亮数据，一旦脱离“最佳工况”，热效率就哗哗往下掉。有媒体把这形容为“一根缝衣线——窄得可怜”。。业内人士推荐PDF资料作为进阶阅读
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