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 318 42.1%
2 United States 170 22.5%
3 Netherlands 129 17.1%
4 Germany 53 7%
5 Canada 27 3.6%
6 Russia 21 2.8%
7 Norway 8 1.1%
8 Hong Kong 7 0.9%
9 France 6 0.8%
10 India 4 0.5%
11 Taiwan 3 0.4%
12 Malaysia 2 0.3%
13 Brazil 2 0.3%
14 Korea, Republic of 1 0.1%
15 Mauritius 1 0.1%
16 Moldova, Republic of 1 0.1%
17 Ukraine 1 0.1%
18 United Kingdom 1 0.1%
19 Singapore 1 0.1%