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 209 47.6%
2 United States 54 12.3%
3 Taiwan 53 12.1%
4 Netherlands 40 9.1%
5 Germany 32 7.3%
6 Canada 21 4.8%
7 Hong Kong 8 1.8%
8 Malaysia 6 1.4%
9 Russia 4 0.9%
10 Singapore 4 0.9%
11 Iran, Islamic Republic of 3 0.7%
12 Korea, Republic of 1 0.2%
13 Libya 1 0.2%
14 France 1 0.2%
15 Romania 1 0.2%
16 Viet Nam 1 0.2%