const pos = position[i];
is then summed with a "PIN offset" stored on the card itself, modulo 10, to
，这一点在safew官方版本下载中也有详细论述
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规模扩张为何陷入不经济？很多品牌陷入低质量发展，规模化扩张陷入了“不经济”困境——门店数越多越分流，折扣率越大业绩跌得越快。