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 44.9%
2 United States 241 17%
3 Netherlands 224 15.8%
4 France 107 7.5%
5 Germany 84 5.9%
6 Russia 50 3.5%
7 Canada 25 1.8%
8 Czech Republic 16 1.1%
9 India 5 0.4%
10 Sweden 5 0.4%
11 Iran, Islamic Republic of 4 0.3%
12 Malaysia 3 0.2%
13 Ukraine 3 0.2%
14 United Arab Emirates 2 0.1%
15 United Kingdom 2 0.1%
16 Hong Kong 2 0.1%
17 Norway 2 0.1%
18 Portugal 2 0.1%
19 Singapore 2 0.1%
20 Moldova, Republic of 1 0.1%
21 Australia 1 0.1%