理学 设计模式 释 singleton pattern 单件模式 一种保证一个类只有一个实例，并提供一个全局性的访问点的设计模式。。又称单态模式、单例模式。
软件工程 释文 singleton pattern 单件模式
- vacancy
- vacancy cluster
- vacancy concentration
- vacancy defect
- vacancy element
- vacancy-interstitial recombination
- vacancy in the shell
- vacancy migration
- vacancy mobility
- vacancy pair
- vacant
- vacant electron site
- vacant element
- vacant lattice site
- vacant place
- vacant registered permanent residence
- vacant set
- vacant shell
- vacant site
- vacation
- vacation queue
- vacation type sports tourism
- vaccenic acid
- vaccine
- vaccine effectiveness,VE