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 189 45%
2 United States 157 37.4%
3 Germany 41 9.8%
4 Canada 12 2.9%
5 Singapore 5 1.2%
6 Hong Kong 3 0.7%
7 Indonesia 2 0.5%
8 Norway 2 0.5%
9 France 2 0.5%
10 Ukraine 2 0.5%
11 United Kingdom 1 0.2%
12 Ireland 1 0.2%
13 Malaysia 1 0.2%
14 Mauritius 1 0.2%
15 Moldova, Republic of 1 0.2%