It needs enough urban forest area and unobstructed water circulating system to build a forest city.

建设森林城市要求有足够的森林面积和通畅的水源环系统。

Multidirectional liquid circulating system decreases bath ratio and increases the uniformity of bath liquid.

多向的循环液流系统，降低了活比，增加了浴液的均匀度。

Meanwhile, it provided a new angle for us to improve the circulating system of the Right to the Contracted Management of Rural Land.

同时，为我国土地承包经营权流转制度的完善提供了新的视角。