[名词解释] marginal ridge
[名词解释] littoral zone(沿岸带)
[名词解释] 赤道带(equatorial zone)
[名词解释] 饱和带(saturation zone)
[名词解释] 缓冲区(Buffer zone)
[主观题]Marginal revenue product(of an input),( MRP) (一种投入的)边际收益产品
[名词解释] Marginal revenue product(of an input),( MRP) (一种投入的)边际收益产品
[名词解释] 边际成本(Marginal cost)
[名词解释] 边际收益(Marginal revenue)