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 13 35.1%
2 Netherlands 10 27%
3 Germany 3 8.1%
4 Russia 2 5.4%
5 Singapore 2 5.4%
6 United Kingdom 2 5.4%
7 United States 1 2.7%
8 Taiwan 1 2.7%
9 Mexico 1 2.7%
10 Moldova, Republic of 1 2.7%
11 France 1 2.7%