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 166 47.3%
2 United States 74 21.1%
3 Spain 38 10.8%
4 Germany 28 8%
5 Netherlands 22 6.3%
6 Canada 9 2.6%
7 Russia 7 2%
8 Korea, Republic of 2 0.6%
9 France 2 0.6%
10 Turkey 2 0.6%
11 Hong Kong 1 0.3%