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 130 62.8%
2 United States 26 12.6%
3 Netherlands 13 6.3%
4 Germany 9 4.3%
5 France 8 3.9%
6 Russia 5 2.4%
7 Canada 5 2.4%
8 Taiwan 3 1.4%
9 Hong Kong 3 1.4%
10 Japan 2 1%
11 Czech Republic 2 1%
12 Australia 1 0.5%