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 203 70.2%
2 United States 35 12.1%
3 Germany 26 9%
4 Hong Kong 5 1.7%
5 Netherlands 4 1.4%
6 Singapore 3 1%
7 Korea, Republic of 3 1%
8 Moldova, Republic of 2 0.7%
9 Brazil 2 0.7%
10 Taiwan 2 0.7%
11 Russia 2 0.7%
12 1 0.3%
13 Ireland 1 0.3%