Heavy metal in excess of the standards is the main factor restricting agricultural use of beer sludge. 摘要重金属超标是限制大量啤酒污泥进行农业利用的主要因素。
On the basis of oasis regionalization, the paper gives the evaluation for agricultural suitable usingof oasis in the Qaidam Basin. 在绿洲区划基础上，对柴达木盆地绿洲农业利用进行评价。
There is a great demand for agricultural machinery in this country. 这个国家十分需要农用机器。
Petroleum by-products for use on the farms also show an increase. 农用石油副产品也有了增长。
