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 238 60.3%
2 United States 79 20%
3 Germany 47 11.9%
4 Canada 14 3.5%
5 Hong Kong 3 0.8%
6 Korea, Republic of 2 0.5%
7 Netherlands 2 0.5%
8 Russia 2 0.5%
9 Bulgaria 2 0.5%
10 Australia 2 0.5%
11 Taiwan 2 0.5%
12 Brazil 1 0.3%
13 Singapore 1 0.3%