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 301 62.7%
2 United States 100 20.8%
3 Germany 37 7.7%
4 Canada 13 2.7%
5 Romania 9 1.9%
6 Russia 6 1.2%
7 Hong Kong 4 0.8%
8 Netherlands 3 0.6%
9 Korea, Republic of 2 0.4%
10 France 2 0.4%
11 Australia 1 0.2%
12 Mauritius 1 0.2%
13 Ireland 1 0.2%