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 147 57.6%
2 United States 62 24.3%
3 Germany 32 12.5%
4 Korea, Republic of 3 1.2%
5 Russia 2 0.8%
6 Singapore 2 0.8%
7 Australia 2 0.8%
8 Japan 2 0.8%
9 Hong Kong 1 0.4%
10 Taiwan 1 0.4%
11 Netherlands 1 0.4%