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 237 50.7%
2 United States 141 30.2%
3 Germany 35 7.5%
4 Taiwan 13 2.8%
5 Canada 12 2.6%
6 Korea, Republic of 5 1.1%
7 Hong Kong 3 0.6%
8 Sao Tome and Principe 3 0.6%
9 Malaysia 2 0.4%
10 Netherlands 2 0.4%
11 Russia 2 0.4%
12 Australia 2 0.4%
13 France 2 0.4%
14 Japan 2 0.4%
15 Singapore 1 0.2%
16 Sweden 1 0.2%
17 Indonesia 1 0.2%
18 Thailand 1 0.2%
19 Turkey 1 0.2%
20 Ukraine 1 0.2%