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 46 36.2%
2 United States 22 17.3%
3 Germany 19 15%
4 Netherlands 13 10.2%
5 Russia 9 7.1%
6 South Africa 3 2.4%
7 India 3 2.4%
8 France 3 2.4%
9 Canada 2 1.6%
10 Czech Republic 2 1.6%
11 Korea, Republic of 2 1.6%
12 Singapore 2 1.6%
13 Greece 1 0.8%