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 474 47.6%
2 United States 192 19.3%
3 Netherlands 152 15.3%
4 Germany 90 9%
5 Sweden 25 2.5%
6 Canada 20 2%
7 France 10 1%
8 Russia 6 0.6%
9 Hong Kong 4 0.4%
10 India 3 0.3%
11 United Kingdom 3 0.3%
12 South Africa 2 0.2%
13 Denmark 2 0.2%
14 Moldova, Republic of 2 0.2%
15 Nigeria 2 0.2%
16 Norway 2 0.2%
17 Poland 1 0.1%
18 Singapore 1 0.1%
19 Brazil 1 0.1%
20 Korea, Republic of 1 0.1%
21 Thailand 1 0.1%
22 Ukraine 1 0.1%