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 208 53.2%
2 United States 88 22.5%
3 Germany 39 10%
4 Netherlands 32 8.2%
5 Canada 5 1.3%
6 Taiwan 4 1%
7 Austria 3 0.8%
8 France 3 0.8%
9 Singapore 3 0.8%
10 Hong Kong 2 0.5%
11 Moldova, Republic of 2 0.5%
12 Ukraine 2 0.5%