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 177 58.2%
2 United States 62 20.4%
3 Germany 39 12.8%
4 Taiwan 8 2.6%
5 Japan 6 2%
6 Canada 3 1%
7 Singapore 2 0.7%
8 Hong Kong 2 0.7%
9 France 2 0.7%
10 Korea, Republic of 1 0.3%
11 Mexico 1 0.3%
12 Russia 1 0.3%