The method measures a load index for the combustion operation which is proportional to the fuel demand or the output. An amount proportional to the air heating losses and an amount proportional to the fuel loss are also measured. A flue temp. is multiplied by an amount of unburnt oxygen in...
Sw=Ew/m=2057.275/((4025+7200+2600)/ (35+60+20)) = 17.11(hm2/a) 某落叶松人工林,轮伐期为 40年,主伐收入为 54760元,在25年、30年、35年 时分别有间伐收入 2310元、3120元、3830元,造林费为1280元,每年管理费300元, 贴现率为6%。求林地的连年收益。(计算结果保留 1位小数) 相关知识点:...