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 Germany 88 38.9%
2 China 66 29.2%
3 Netherlands 30 13.3%
4 United States 23 10.2%
5 India 5 2.2%
6 Brazil 3 1.3%
7 Singapore 3 1.3%
8 Spain 2 0.9%
9 Canada 2 0.9%
10 Moldova, Republic of 2 0.9%
11 Norway 1 0.4%
12 France 1 0.4%