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 168 34.9%
2 China 157 32.6%
3 Germany 38 7.9%
4 Netherlands 27 5.6%
5 Korea, Republic of 24 5%
6 Taiwan 13 2.7%
7 Lithuania 10 2.1%
8 Togo 9 1.9%
9 Hong Kong 7 1.5%
10 France 6 1.2%
11 Norway 3 0.6%
12 Viet Nam 3 0.6%
13 Canada 2 0.4%
14 Romania 2 0.4%
15 Russia 2 0.4%
16 United Kingdom 2 0.4%
17 Malaysia 2 0.4%
18 Australia 2 0.4%
19 Belgium 1 0.2%
20 India 1 0.2%
21 Ireland 1 0.2%
22 South Africa 1 0.2%
23 Switzerland 1 0.2%