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 439 49.1%
2 United States 198 22.1%
3 Germany 83 9.3%
4 Netherlands 58 6.5%
5 France 50 5.6%
6 Canada 27 3%
7 Czech Republic 14 1.6%
8 Korea, Republic of 8 0.9%
9 India 7 0.8%
10 Hong Kong 4 0.4%
11 Spain 2 0.2%
12 Ukraine 2 0.2%
13 United Kingdom 2 0.2%
14 Taiwan 1 0.1%