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 201 53.6%
2 United States 106 28.3%
3 Germany 39 10.4%
4 Taiwan 8 2.1%
5 Singapore 6 1.6%
6 Canada 4 1.1%
7 Hong Kong 3 0.8%
8 France 3 0.8%
9 Netherlands 2 0.5%
10 Russia 2 0.5%
11 Moldova, Republic of 1 0.3%