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 United States 170 40.8%
2 China 168 40.3%
3 Germany 38 9.1%
4 Russia 6 1.4%
5 Hong Kong 5 1.2%
6 Canada 4 1%
7 Philippines 3 0.7%
8 Singapore 3 0.7%
9 Taiwan 3 0.7%
10 Ukraine 2 0.5%
11 Netherlands 2 0.5%
12 Japan 2 0.5%
13 Korea, Republic of 2 0.5%
14 Malaysia 2 0.5%
15 2 0.5%
16 Australia 2 0.5%
17 France 1 0.2%
18 Mauritius 1 0.2%
19 Moldova, Republic of 1 0.2%