Heavy metal in excess of the standards is the main factor restricting agricultural use of beer sludge. 摘要重金屬超標是限制大量啤酒污泥進行農業利用的主要因素。
On the basis of oasis regionalization, the paper gives the evaluation for agricultural suitable usingof oasis in the Qaidam Basin. 在綠洲區劃基礎上，對柴達木盆地綠洲農業利用進行評價。
There is a great demand for agricultural machinery in this country. 這個國家十分需要農用機器。
Petroleum by-products for use on the farms also show an increase. 農用石油副產品也有了增長。
