理学 设计模式 释 observer pattern 观察者模式 一种设计模式。定义一个对象与其他对象之间的一对多的依赖关系，当一个对象改变状态时，所有与它有依赖关系的对象都被通知并自动更新。又称依赖（dependents）模式、发布-订阅（publish-subscribe）模式。
软件工程 释文 observer pattern 观察者模式
- electric initiation
- electric instruments components
- electric instruments system
- electric instruments verifying apparatus
- electric insulation textiles
- electricity
- electricity consumption for irrigation and drainage
- electricity consumption load curve
- electricity consumption load ratio
- electricity consumption of primary industry
- electricity consumption of rural residents living
- electricity consumption power factor
- electricity consumption structure
- electricity consumption to transferred cooling (heat) quantity ratio
- Electricity Economics：Regulation and Deregulation
- electricity elasticity coefficient
- electricity information acquisiton technology
- electricity producing microorganism
- electricity production
- Electricity quality
- electricity subsidies for agricultural production
- Electricity suppliers poverty alleviation
- electric kiln
- electric lamp
- electric leakage