俯角 [－－]

Jyutping fu2 gok3
Pinyin fǔ jiǎo

Definitions (粵典–words.hk)
  1. x
Definitions (Wiktionary)
  1. noun
    angle of depression
Definitions (Kaifangcidian)
  1. （沒有對應漢語詞彙）