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 222 62.2%
2 United States 79 22.1%
3 Germany 30 8.4%
4 Spain 4 1.1%
5 Brazil 3 0.8%
6 Singapore 3 0.8%
7 France 2 0.6%
8 Ireland 2 0.6%
9 Japan 2 0.6%
10 Korea, Republic of 2 0.6%
11 Moldova, Republic of 2 0.6%
12 Netherlands 2 0.6%
13 Poland 2 0.6%
14 Russia 1 0.3%
15 Switzerland 1 0.3%