fixed area造句怎么写

3、Based on ecology theory, Eco-agricultural system is the agriculture production system that was built in a fixed area.

5、Relating to or being a method especially of land cultivation intended to increase the productivity of a fixed area by means of an increase in capital and labor.

2、In forest inventory, multistage sampling is not limited to sampling units with fixed area.

1、(i) such payments are based on fixed area and yields;

4、If desert is only a small fixed area, it may be a kind of benevolence to human beings, but too much, too much, is a disaster.