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 54 38.8%
2 United States 37 26.6%
3 Germany 14 10.1%
4 Netherlands 13 9.4%
5 France 6 4.3%
6 Taiwan 4 2.9%
7 Russia 3 2.2%
8 Singapore 2 1.4%
9 Hong Kong 2 1.4%
10 Korea, Republic of 2 1.4%
11 Ukraine 1 0.7%
12 United Kingdom 1 0.7%