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 179 56.8%
2 United States 61 19.4%
3 Germany 35 11.1%
4 Canada 15 4.8%
5 Netherlands 7 2.2%
6 Australia 4 1.3%
7 Taiwan 3 1%
8 Sweden 2 0.6%
9 Singapore 2 0.6%
10 Hong Kong 2 0.6%
11 India 2 0.6%
12 Moldova, Republic of 2 0.6%
13 South Africa 1 0.3%