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 1124 86.3%
2 United States 101 7.8%
3 Germany 43 3.3%
4 Korea, Republic of 9 0.7%
5 Hong Kong 7 0.5%
6 Netherlands 7 0.5%
7 Taiwan 3 0.2%
8 Belarus 2 0.2%
9 Canada 2 0.2%
10 Moldova, Republic of 1 0.1%
11 India 1 0.1%
12 Italy 1 0.1%
13 Austria 1 0.1%