理学 基于UML的设计 释 activity diagram 活动图 统一建模语言（unified modeling language; UML）的一种行为图，由各种动作结点、控制结点和它们之间的控制流、对象流等元素构成。
软件工程 释文 activity diagram 活动图
- period inequality
- period integral
- periodization
- periodization of annual training
- Periodization of History
- periodization of multi-year training
- period lattice
- period length
- Period life table
- period-luminosity-color relation
- period-luminosity curve
- period-luminosity relation
- period mapping
- period-mass relation
- period matrix
- period-mean density relation
- period module
- period-n-tupling bifurcation
- period of a circulating decimal
- period of a class
- period of a continued fraction
- period of a decimal fraction
- period of a differential
- period of a function
- period of a group