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 210 62.5%
2 United States 56 16.7%
3 Germany 44 13.1%
4 Netherlands 9 2.7%
5 Russia 4 1.2%
6 France 2 0.6%
7 Hong Kong 2 0.6%
8 Taiwan 2 0.6%
9 Ukraine 1 0.3%
10 United Kingdom 1 0.3%
11 Viet Nam 1 0.3%
12 India 1 0.3%
13 Malaysia 1 0.3%
14 Moldova, Republic of 1 0.3%
15 Singapore 1 0.3%