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 83 33.6%
2 United States 61 24.7%
3 Germany 31 12.6%
4 Netherlands 18 7.3%
5 Russia 13 5.3%
6 Singapore 10 4%
7 Hong Kong 7 2.8%
8 India 5 2%
9 Oman 3 1.2%
10 Turkey 2 0.8%
11 Spain 2 0.8%
12 Japan 2 0.8%
13 Moldova, Republic of 2 0.8%
14 France 2 0.8%
15 Brazil 2 0.8%
16 Canada 2 0.8%
17 Sweden 1 0.4%
18 Poland 1 0.4%