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 445 46.7%
2 United States 303 31.8%
3 Netherlands 112 11.8%
4 Germany 45 4.7%
5 Canada 12 1.3%
6 Singapore 6 0.6%
7 India 6 0.6%
8 France 5 0.5%
9 Taiwan 4 0.4%
10 Russia 4 0.4%
11 Ukraine 4 0.4%
12 Turkey 2 0.2%
13 Italy 2 0.2%
14 Japan 1 0.1%
15 Romania 1 0.1%
16 Hong Kong 1 0.1%