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 526 45%
2 United States 304 26%
3 Netherlands 197 16.8%
4 Germany 51 4.4%
5 France 31 2.6%
6 Canada 22 1.9%
7 Hong Kong 9 0.8%
8 Singapore 7 0.6%
9 Taiwan 7 0.6%
10 Sweden 4 0.3%
11 Malaysia 4 0.3%
12 South Africa 2 0.2%
13 Romania 2 0.2%
14 Russia 2 0.2%
15 Japan 1 0.1%
16 Korea, Republic of 1 0.1%