充要条件

chōng yào tiáo jiàn

释义

1. necessary and sufficient condition

充要条件 的构成词

• 件 件 jiàn: item
• 充 充 chōng: sufficient; full
• 条 条 tiáo: strip
• 条件 条件 tiáo jiàn: condition; circumstance; term; factor
• 要 要 yāo: (bound form) to demand; to coerce
• 要 要 yào: to want; to need; to ask for