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 144 58.1%
2 United States 41 16.5%
3 Germany 36 14.5%
4 Taiwan 13 5.2%
5 Hong Kong 4 1.6%
6 Netherlands 3 1.2%
7 Singapore 2 0.8%
8 France 2 0.8%
9 Moldova, Republic of 1 0.4%
10 Ukraine 1 0.4%
11 Canada 1 0.4%