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 253 55.7%
2 United States 68 15%
3 Canada 35 7.7%
4 Germany 32 7%
5 Netherlands 23 5.1%
6 Hong Kong 17 3.7%
7 Singapore 7 1.5%
8 Taiwan 5 1.1%
9 Korea, Republic of 4 0.9%
10 Russia 4 0.9%
11 Ukraine 2 0.4%
12 Japan 2 0.4%
13 Romania 1 0.2%
14 Armenia 1 0.2%