缓降 (緩降) huǎnjiàng

huǎnjiàng verb to decrease gradually; to descend gradually
Domain: Modern Chinese 现代汉语
Notes: (CC-CEDICT '緩降')

Contained in

• 缓降器(緩降器) cable reel and harness used to lower oneself to safety (e.g. from a building on fire)