| 乙醇转化率 | Coef. | Std. Err. | t | P > t | [95% Conf. | Interval] | 
| 装料方式 | 4.459328 | 2.328068 | 1.92 | 0.058 | −0.15531 | 9.073963 | 
| 是否加入石英砂 | −4.1251 | 5.198884 | −0.79 | 0.429 | −14.4302 | 6.179993 | 
| 乙醇浓度 | −8.28019 | 1.994034 | −4.15 | 0.000 | −12.2327 | −4.32767 | 
| 温度 | 0.333701 | 0.01871 | 17.84 | 0.000 | 0.296614 | 0.370788 | 
| HAP | 0.096099 | 0.016192 | 5.93 | 0.000 | 0.064003 | 0.128194 | 
| _cons | −82.9088 | 7.219707 | −11.48 | 0.000 | −97.2195 | −68.5981 |