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 400 71.9%
2 United States 59 10.6%
3 Germany 32 5.8%
4 Canada 14 2.5%
5 Taiwan 10 1.8%
6 Hong Kong 8 1.4%
7 Korea, Republic of 8 1.4%
8 6 1.1%
9 New Zealand 4 0.7%
10 Netherlands 2 0.4%
11 Singapore 2 0.4%
12 Australia 2 0.4%
13 Kuwait 2 0.4%
14 Iran, Islamic Republic of 2 0.4%
15 Japan 2 0.4%
16 Latvia 1 0.2%
17 Brazil 1 0.2%
18 Russia 1 0.2%