分面浏览：Issued Date |
| 当前检索式 | ((ALL：slope gradient)) |
| 限定条件 | 无 |
共37条，第1-37条
| 2024 6 | 2023 24 | 2022 38 |
| 2021 62 | 2020 74 | 2019 71 |
| 2018 71 | 2017 60 | 2016 64 |
| 2015 46 | 2014 51 | 2013 67 |
| 2012 42 | 2011 41 | 2010 39 |
| 2009 34 | 2008 25 | 2007 27 |
| 2006 28 | 2005 20 | 2004 12 |
| 2003 9 | 2002 11 | 2001 12 |
| 2000 7 | 1999 4 | 1998 4 |
| 1997 3 | 1996 3 | 1995 1 |
| 1994 1 | 1992 7 | 1991 3 |
| 1990 1 | 1989 1 | 1988 1 |
| 1985 1 |