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 418 49.1%
2 United States 221 25.9%
3 Germany 74 8.7%
4 Netherlands 61 7.2%
5 France 20 2.3%
6 Canada 19 2.2%
7 Russia 13 1.5%
8 India 7 0.8%
9 Korea, Republic of 7 0.8%
10 Poland 4 0.5%
11 Hong Kong 3 0.4%
12 United Kingdom 3 0.4%
13 Switzerland 2 0.2%