---
id: vocab-49-00698
libId: 698
word: 定义域
type: vocabulary
dictionary:
  id: dict-49
  name: 科技汉语一二三级大纲词汇总
pinyin: dìng yì yù
difficulty: '3'
translations:
  english: Define Domain
  french: Définir un domaine
  portuguese: Definir Domínio
  spanish: Dominio definido
  russian: область определения
properties: 名
media:
  image: https://dl.baizor.com/public_resources/dictionary/dict-49/oss/images/level3/48.定义域.png
  audio: null
orderNum: 48
stats:
  sentenceCount: 2
  describeCount: 0
  characterCount: 3
completeness:
  hasBasicInfo: true
  hasTranslation: true
  hasAudio: false
  hasImage: true
  hasStrokeData: false
  hasExampleSentences: true
---

# --sentences--

## vs-1
**sentence**: 函数y=x的定义域为R所有实数。

## vs-2
**sentence**: 确定定义域是解题的第一步。

# --media--

- **配图**: ![定义域](https://dl.baizor.com/public_resources/dictionary/dict-49/oss/images/level3/48.定义域.png)