Methods On the basis of binormal model, maximum likelihood estimation was applied to areas calculation, and approximately normal method to confidence interval estimation and hypothesis test.

方法在双正态模型基础下应用ML估计方法计算ROC曲线下面积，正态近似法估计面积的可信区间及假设检验。

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The gross profit and the net income are reduced for the period in which the decline occurred and (2) an approximately normal gross profit is realized during the period in which the item is sold.

在价格下跌时期，销货毛利和净收益减少（2）在出售货物期间，能够实现近似正常的毛利。

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The normal storage volume is approximately 32,000 acre feet.

正常的存储容量大约是32000英亩英尺。

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Mining rates are averaging approximately 200, 000 metric tons per day, which is approximately two thirds of normal production rates, and essentially all mining rates dedicated to the production of ore to feed the concentrator and the leach pad which are both operating at near capacity levels, the company said.

FORBES: Freeport Strikes Further Limiting Supply For Copper Market

However, three weeks later the mutant mice began drinking approximately three times more alcohol than the normal mice.

BBC: Genes may drive stressed-out drinkers