BPG致力于知识的发现和传播
Total Visits of This Article
2021 | 总访问次数
排名 国家/地区 数量 占比
1 China 52 42.3%
2 United States 29 23.6%
3 Netherlands 17 13.8%
4 Canada 7 5.7%
5 Australia 3 2.4%
6 Japan 3 2.4%
7 Venezuela, Bolivarian Republic of 3 2.4%
8 Germany 2 1.6%
9 New Zealand 2 1.6%
10 Estonia 2 1.6%
11 France 1 0.8%
12 Singapore 1 0.8%
13 Malaysia 1 0.8%