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 494 38.3%
2 United States 254 19.7%
3 Netherlands 232 18%
4 Germany 106 8.2%
5 France 95 7.4%
6 Russia 31 2.4%
7 Canada 24 1.9%
8 Czech Republic 15 1.2%
9 Hong Kong 9 0.7%
10 Korea, Republic of 6 0.5%
11 Taiwan 4 0.3%
12 Japan 4 0.3%
13 India 3 0.2%
14 Ukraine 3 0.2%
15 Portugal 3 0.2%
16 United Arab Emirates 1 0.1%
17 Singapore 1 0.1%
18 Mauritius 1 0.1%
19 Norway 1 0.1%
20 Estonia 1 0.1%
21 Australia 1 0.1%