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 637 54.2%
2 United States 178 15.1%
3 Netherlands 163 13.9%
4 France 86 7.3%
5 Germany 64 5.4%
6 Canada 15 1.3%
7 Korea, Republic of 7 0.6%
8 Hong Kong 6 0.5%
9 India 4 0.3%
10 Norway 3 0.3%
11 Russia 3 0.3%
12 Ukraine 2 0.2%
13 Morocco 2 0.2%
14 Australia 1 0.1%
15 Brazil 1 0.1%
16 Israel 1 0.1%
17 United Kingdom 1 0.1%
18 Pakistan 1 0.1%