“递减的”用英语怎么说

粒度一般是向上递减的.There is a general decrease in grain size upward.在不存在成本递减的地方, 对国营企业的存在是有争论的.Where declining costs do not exist, the presence of state enterprise is controversial.影响递减的主要因素是采油速度.The main influence factor of pro...