Low-quality clay occupies a dominant position of huge resources and wide distribution,making use Of low-quality clay to develop ceramics of local feature is favourable for the develops ment of ceramic industry and for exploiting mineral resources amply and rationally.
低质粘土具有资源丰富、分布广的优势。
An experimental plot of the low-quality and low-benefit secondary forest of Masson Pine is set up for transformation in Chaling county, Hunan Province, whose area is 10 hm2.
在湖南省茶陵县设置了低质低效马尾松次生林改造试验基地 ,面积为 10 hm2 。