玉米酒精: 原料用量与效率

效率提高的原因主要有两个: 第一个是规模效应, 第二个是采用了更好的孝母.

Source: U.S. Energy Information Administration, Monthly Energy Review
Note: Ethanol volumes do not include gasoline that must be added to denature ethanol, rendering it undrinkable and therefore taxable as fuel rather than as beverage alcohol.