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 467 47.6%
2 United States 221 22.5%
3 Netherlands 154 15.7%
4 Germany 48 4.9%
5 France 31 3.2%
6 Korea, Republic of 14 1.4%
7 Canada 13 1.3%
8 Hong Kong 9 0.9%
9 India 4 0.4%
10 Russia 4 0.4%
11 Taiwan 3 0.3%
12 Ukraine 3 0.3%
13 Japan 3 0.3%
14 Spain 2 0.2%
15 Indonesia 2 0.2%
16 Australia 1 0.1%
17 United Kingdom 1 0.1%
18 New Zealand 1 0.1%