һӦЧ
1ڼЧʸߣЧʼ٣ĽЧۼ㣩ǰͶܹ318ǧߣΪ144ǧߡȫ갴300㣬ÿ찴20Сʱ㣬ڵΪW/318144*300*20=104.4ȡ
2߶¿졣ǰʱΪ2СʱΪ15ӡȫ갴80μýڵΪW2318*2-144*0.04*80=4.57ȡ