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 503 52.1%
2 United States 218 22.6%
3 Netherlands 111 11.5%
4 Germany 64 6.6%
5 Canada 17 1.8%
6 Hong Kong 16 1.7%
7 Taiwan 7 0.7%
8 Japan 6 0.6%
9 France 4 0.4%
10 Singapore 4 0.4%
11 United Kingdom 4 0.4%
12 Norway 3 0.3%
13 Australia 2 0.2%
14 Brazil 1 0.1%
15 Chile 1 0.1%
16 Hungary 1 0.1%
17 India 1 0.1%
18 Korea, Republic of 1 0.1%
19 Finland 1 0.1%
20 Thailand 1 0.1%