Two patterns of air plane engine inlet hot-air anti-icer are introduced in this paper, one is circumferential anti-icer, the other is double skin corrugated chord direction anti-icer.
Despite that, limited domestic air travel resumes there this week, with employees disinfecting bags and some travelers wearing conspicuous safety gear.
飞
发动
对飞行安全具有十分重
，
在继续运行，
行了消毒，部分旅客甚至
。
