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 72 38.9%
2 United States 54 29.2%
3 Netherlands 16 8.6%
4 Germany 8 4.3%
5 Korea, Republic of 8 4.3%
6 Poland 7 3.8%
7 Ghana 5 2.7%
8 Hong Kong 2 1.1%
9 India 2 1.1%
10 Macao 2 1.1%
11 Norway 2 1.1%
12 Spain 2 1.1%
13 Switzerland 2 1.1%
14 Russia 1 0.5%
15 Canada 1 0.5%
16 Lithuania 1 0.5%