ECC (Elliptical Curve Crypto system) is suit for the mobile communication equipment for its advantage of short key and low cost.
椭圆曲线密码体制因其具有密钥短、开销小的优点,非常适合应用于移动通信设备。
How and why does a firm's average-total-cost curve differ in the short run and in the long run?
为何一个企业的短期平均总成本和长期平均总成本不一致?
The portion of the marginal-cost curve that lies above average variable cost is the competitive firm's short-run supply curve.
竞争企业的短期供给曲线是边际成本曲线在平均可变成本曲线以上的那一部分。
The portion of the marginal-cost curve that lies above average variable cost is the competitive firm's short-run supply curve.
竞争企业的短期供给曲线是边际成本曲线在平均可变成本曲线以上的那一部分。
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