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 395 58.7%
2 United States 124 18.4%
3 Netherlands 71 10.5%
4 Germany 50 7.4%
5 Canada 12 1.8%
6 Hong Kong 4 0.6%
7 France 4 0.6%
8 United Kingdom 3 0.4%
9 Norway 3 0.4%
10 Korea, Republic of 2 0.3%
11 Spain 2 0.3%
12 Singapore 1 0.1%
13 Brazil 1 0.1%
14 Czech Republic 1 0.1%