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 266 64.3%
2 United States 59 14.3%
3 Germany 48 11.6%
4 Canada 16 3.9%
5 Japan 6 1.4%
6 India 5 1.2%
7 Hong Kong 3 0.7%
8 Singapore 3 0.7%
9 Spain 2 0.5%
10 Romania 2 0.5%
11 Norway 1 0.2%
12 Pakistan 1 0.2%
13 Ireland 1 0.2%
14 Viet Nam 1 0.2%