Objective The Devonian bivalves are well developed,highly diversified and widely distributed in Guangxi.However,they have not been well studied previously,altho
Critical discourse analysis mainly focuses on news reports, official documents and non-literature discourses to reveal the relation between language use, ideolo
Objective The Lop Nor Basin is a very important Quaternary potash-formation basin in China.It is a typical sulphatepotash brine mine with an average grade of 1.