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 154 59%
2 United States 59 22.6%
3 Germany 31 11.9%
4 3 1.1%
5 Czech Republic 2 0.8%
6 Hong Kong 2 0.8%
7 Japan 2 0.8%
8 Moldova, Republic of 2 0.8%
9 Singapore 2 0.8%
10 Taiwan 1 0.4%
11 Russia 1 0.4%
12 France 1 0.4%
13 Bulgaria 1 0.4%