分面浏览：发表日期 |
| 当前检索式 | ((ALL：Natural gas)) |
| 限定条件 | 无 |
| 2024 31 | 2023 121 | 2022 283 |
| 2021 518 | 2020 614 | 2019 941 |
| 2018 960 | 2017 803 | 2016 705 |
| 2015 487 | 2014 443 | 2013 350 |
| 2012 412 | 2011 331 | 2010 556 |
| 2009 264 | 2008 181 | 2007 100 |
| 2006 108 | 2005 80 | 2004 136 |
| 2003 60 | 2002 85 | 2001 42 |
| 2000 56 | 1999 32 | 1998 48 |
| 1997 28 | 1996 20 | 1995 19 |
| 1994 18 | 1993 11 | 1992 11 |
| 1991 6 | 1990 2 | 1989 3 |
| 1987 11 | 1983 1 | 1973 1 |
