Forest health is a new theory produced in control practice of forest pest and fire in recent ten years.

森林健康是美国近十多年来在森林病虫火防治实践中形成的一种新的理论。

youdao

Forest health is a new theory produced in control practice of forest pest and fire in recent ten years.

森林健康是美国近十多年来在森林病虫火防治实践中形成的一种新的理论。

youdao