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 531 41.4%
2 United States 225 17.6%
3 Netherlands 222 17.3%
4 France 104 8.1%
5 Germany 84 6.6%
6 Russia 60 4.7%
7 Canada 21 1.6%
8 Czech Republic 16 1.2%
9 Taiwan 4 0.3%
10 Ukraine 3 0.2%
11 India 3 0.2%
12 Iran, Islamic Republic of 3 0.2%
13 Viet Nam 2 0.2%
14 United Arab Emirates 1 0.1%
15 Singapore 1 0.1%
16 Portugal 1 0.1%
17 Australia 1 0.1%