前提假設: 九成的全速下載速度
150/M數 = 下載 1GB 所需分鐘數
例如:
2Mbps 的網路下載 1GB 所需時間是 150/2=75 分鐘
10Mbps 的網路下載 1GB 所需時間是 150/10=15 分鐘
150 是這樣來的
1024*1024*1024*8/(1024*1024*60*0.9)=151.7
快速估算下載1GB所需時間
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