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 250 68.9%
2 United States 64 17.6%
3 Germany 13 3.6%
4 Netherlands 7 1.9%
5 Japan 5 1.4%
6 Korea, Republic of 5 1.4%
7 Australia 4 1.1%
8 Hong Kong 4 1.1%
9 France 4 1.1%
10 Philippines 3 0.8%
11 Russia 2 0.6%
12 Ukraine 1 0.3%
13 Moldova, Republic of 1 0.3%