| | ︹2020︺ 6 | | | | | | | | | | | ︹ 2020︺ 4 | | | | | | | | | | | | | | 2020 11 1 | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | ︹ 2019 ︺ 24 | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | PAD | | | 1 2 PAD | | | | | | | | LED | | | | | | | | | | | 2020 2 23 | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |