分面浏览：发表日期 |
| 当前检索式 | ((ALL：Research and development (R&D))) |
| 限定条件 | 无 |
| 2024 22 | 2023 75 | 2022 188 |
| 2021 377 | 2020 440 | 2019 581 |
| 2018 338 | 2017 313 | 2016 217 |
| 2015 127 | 2014 107 | 2013 140 |
| 2012 119 | 2011 120 | 2010 181 |
| 2009 91 | 2008 59 | 2007 34 |
| 2006 22 | 2005 19 | 2004 9 |
| 2003 14 | 2002 16 | 2001 10 |
| 2000 2 | 1999 6 | 1998 3 |
| 1997 2 | 1996 3 | 1995 4 |
| 1993 1 |
