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 199 68.9%
2 United States 43 14.9%
3 Germany 23 8%
4 Hong Kong 7 2.4%
5 France 6 2.1%
6 Singapore 4 1.4%
7 Switzerland 2 0.7%
8 Korea, Republic of 2 0.7%
9 Netherlands 1 0.3%
10 Turkey 1 0.3%
11 India 1 0.3%