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 636 53.1%
2 United States 213 17.8%
3 Netherlands 162 13.5%
4 Germany 87 7.3%
5 France 42 3.5%
6 Canada 21 1.8%
7 Russia 11 0.9%
8 Ukraine 4 0.3%
9 Hong Kong 3 0.3%
10 India 2 0.2%
11 Japan 2 0.2%
12 Korea, Republic of 2 0.2%
13 Macao 2 0.2%
14 Singapore 2 0.2%
15 Spain 2 0.2%
16 Taiwan 2 0.2%
17 New Zealand 1 0.1%
18 Switzerland 1 0.1%
19 Italy 1 0.1%
20 United Kingdom 1 0.1%