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 463 76.8%
2 United States 75 12.4%
3 Germany 39 6.5%
4 Canada 6 1%
5 Singapore 5 0.8%
6 Australia 3 0.5%
7 Netherlands 3 0.5%
8 Russia 2 0.3%
9 Hong Kong 2 0.3%
10 France 2 0.3%
11 Taiwan 2 0.3%
12 Ukraine 1 0.2%