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 578 54%
2 United States 251 23.4%
3 Netherlands 83 7.7%
4 Germany 55 5.1%
5 France 31 2.9%
6 Canada 20 1.9%
7 India 9 0.8%
8 Korea, Republic of 8 0.7%
9 Russia 8 0.7%
10 Senegal 7 0.7%
11 Taiwan 7 0.7%
12 Australia 3 0.3%
13 Brazil 2 0.2%
14 Hong Kong 2 0.2%
15 Thailand 2 0.2%
16 Ukraine 1 0.1%
17 Singapore 1 0.1%
18 Switzerland 1 0.1%
19 Finland 1 0.1%
20 Chile 1 0.1%