http://www.cnki.net 1994-2007 China Academic Journal Electronic Publishing House. All rights reserved. hቤተ መጻሕፍቲ ባይዱtp://www.cnki.net 1994-2007 China Academic Journal Electronic Publishing House. All rights reserved. 1994-2007 China Academic Journal Electronic Publishing House. All rights reserved. http://www.cnki.net 1994-2007 China Academic Journal Electronic Publishing House. All rights reserved. http://www.cnki.net http://www.cnki.net 1994-2007 China Academic Journal Electronic Publishing House. All rights reserved. http://www.cnki.net 1994-2007 China Academic Journal Electronic Publishing House. All rights reserved.