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 242 61.7%
2 United States 84 21.4%
3 Germany 26 6.6%
4 Canada 10 2.6%
5 Taiwan 8 2%
6 Hong Kong 3 0.8%
7 Japan 3 0.8%
8 Korea, Republic of 2 0.5%
9 Macao 2 0.5%
10 Mexico 2 0.5%
11 Singapore 2 0.5%
12 Austria 2 0.5%
13 Viet Nam 2 0.5%
14 Ukraine 1 0.3%
15 France 1 0.3%
16 Brazil 1 0.3%
17 Australia 1 0.3%