桃大大仙
volume of tail-gas emission直接用 tail-gas emission 也行。这废气是指汽车排出的废气 ，俗称“尾气”，新闻也是这样报道的。
julielovecat
"Industrial wastes" is the general term of "waste water,waste residue ,waste gas".prodused during the industrial production.The discharge rate of the industrial wastes is the main index of the low-carbon circumstance of an enterprise.The wastes' discharge rate=the total wastes/the total materials.
