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 428 76.3%
2 United States 54 9.6%
3 Germany 32 5.7%
4 Canada 30 5.3%
5 Hong Kong 5 0.9%
6 Korea, Republic of 4 0.7%
7 Netherlands 2 0.4%
8 India 2 0.4%
9 Singapore 2 0.4%
10 Russia 1 0.2%
11 Macao 1 0.2%