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 183 59.4%
2 United States 49 15.9%
3 Germany 40 13%
4 Canada 15 4.9%
5 Russia 3 1%
6 Taiwan 3 1%
7 Turkey 2 0.6%
8 Ukraine 2 0.6%
9 Singapore 2 0.6%
10 Czech Republic 2 0.6%
11 Iraq 2 0.6%
12 Netherlands 2 0.6%
13 New Zealand 1 0.3%
14 France 1 0.3%
15 Albania 1 0.3%