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 141 55.5%
2 United States 56 22%
3 Germany 30 11.8%
4 Hong Kong 4 1.6%
5 Taiwan 4 1.6%
6 Russia 3 1.2%
7 Italy 3 1.2%
8 Moldova, Republic of 3 1.2%
9 Netherlands 2 0.8%
10 France 2 0.8%
11 Saudi Arabia 2 0.8%
12 Brazil 2 0.8%
13 Singapore 1 0.4%
14 Mauritius 1 0.4%