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
- problem of divisors
- problem of doubling a cube
- problem of duplication of a cube
- problem of geometric construction
- problem of honeycomb
- problem of impossible construction
- problem of large deviation
- problem of lotus flower
- problem of many bodies
- problem of minimum time
- problem of moduli
- problem of moments
- problem of n bodies
- problem of optimal control
- problem of optimization
- problem of points
- problem of possible construction
- problem of prime twins
- problem of pursuit
- problem of quadrature of a circle
- problem of random walk
- problem of routing aircraft
- problem of satisfiability
- problem of squaring a circle
- problem of stability of solar system