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 United States 67 32.7%
2 China 56 27.3%
3 Netherlands 19 9.3%
4 Germany 16 7.8%
5 Canada 14 6.8%
6 France 4 2%
7 Belgium 4 2%
8 India 4 2%
9 Japan 4 2%
10 Korea, Republic of 2 1%
11 Malaysia 2 1%
12 Iran, Islamic Republic of 2 1%
13 Pakistan 2 1%
14 Russia 2 1%
15 Hong Kong 2 1%
16 Taiwan 2 1%
17 Australia 1 0.5%
18 Czech Republic 1 0.5%
19 Spain 1 0.5%