The fifth day is the logarithm stage for the mycelium growth. 菌丝体生长的第五天为菌丝对数生长阶段。
The security of the scheme is set up on the intricate nature of the elliptic curve discrete logarithm problem and the knapsack problem. 方案的安全性建立在椭圆曲线离散对数问题和变形的背包问题的难解性上。