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 408 51.2%
2 United States 186 23.3%
3 Netherlands 85 10.7%
4 Germany 54 6.8%
5 Canada 18 2.3%
6 Russia 9 1.1%
7 India 6 0.8%
8 France 6 0.8%
9 Ukraine 5 0.6%
10 Singapore 4 0.5%
11 Poland 4 0.5%
12 Turkey 3 0.4%
13 United Kingdom 2 0.3%
14 Switzerland 2 0.3%
15 Japan 2 0.3%
16 Moldova, Republic of 1 0.1%
17 Australia 1 0.1%
18 Brazil 1 0.1%