https://www.businessinsider.com/russia-deploys-feared-tos-1-heavy-flamethrower-near-ukraine-cnn-2022-2
大杀器1: 温压弹发射器，已经运到边界
It can launch two types of warheads — incendiary and fuel-air explosives. The latter, also called vacuum or thermobaric rockets, work by using oxygen from the surrounding air to generate a high-temperature explosion.