A Lyapunov-Razumikhin Condition of ISS for Switched Time-Delay Systems Under Average Dwell Time Commutation⁎This work was supported by the National Nature Science Foundation of China (No. 61873314), 111 project No. D17019 (China), the Government of Russian Federation (Grant 08-08), the Ministry of Science and Higher Education of Russian Federation, passport of goszadanie no. 2019-0898, and the Natural Science Foundation of Zhejiang Province, China (No. LY20F030008). Issue 2 (2020)