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 62 45.3%
2 United States 26 19%
3 Netherlands 17 12.4%
4 Canada 8 5.8%
5 Russia 6 4.4%
6 Germany 5 3.6%
7 Japan 4 2.9%
8 Taiwan 3 2.2%
9 Czech Republic 2 1.5%
10 Australia 2 1.5%
11 Brazil 1 0.7%
12 Hong Kong 1 0.7%