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 184 72.2%
2 United States 28 11%
3 Netherlands 16 6.3%
4 Germany 9 3.5%
5 Korea, Republic of 6 2.4%
6 France 5 2%
7 Japan 2 0.8%
8 Hong Kong 1 0.4%
9 Russia 1 0.4%
10 Singapore 1 0.4%
11 Thailand 1 0.4%
12 United Kingdom 1 0.4%