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 60 41.1%
2 United States 38 26%
3 Netherlands 15 10.3%
4 Korea, Republic of 10 6.8%
5 France 5 3.4%
6 Hong Kong 5 3.4%
7 Russia 4 2.7%
8 South Africa 2 1.4%
9 Spain 2 1.4%
10 New Zealand 2 1.4%
11 Canada 2 1.4%
12 Germany 1 0.7%