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 183 62.5%
2 United States 48 16.4%
3 Germany 28 9.6%
4 Canada 19 6.5%
5 Taiwan 8 2.7%
6 Netherlands 2 0.7%
7 Norway 1 0.3%
8 Russia 1 0.3%
9 Singapore 1 0.3%
10 Brazil 1 0.3%
11 Hong Kong 1 0.3%