理学 基于UML的设计 释 sequence diagram 顺序图 一种交互图，用于表示一组对象（或其他实体）在完成某项任务时所进行的交互，按时间顺序把参加交互的各个对象及外部参与者所执行的操作、彼此之间所传送的消息，以及相关的条件和约束展现出来，从而详细地表示对象之间的行为关系以及操作和消息的时序关系。
软件工程 释文 sequence diagram 顺序图
- unequal projection
- unequal strain
- unequal stress
- unequal subclasses
- unequal subclass numbers
- UNESCO
- UNESCO Asia-Pacific Awards for Cultural Heritage Conservation
- UNESCO Courier
- UNESCO Creative Cities Network
- UNESCO General History of Africa
- UNESCO Information for All Programme
- UNESCO initiative on heritage of religious interest
- UNESCO Longmen Grottoes protection and restoration project
- UNESCO-UNEVOC International Centre for Technical and Vocational Education and Training
- UNESCO World Heritage and Sustainable Tourism Programme
- unessential
- unessential expansion
- unessential singularity
- U-network
- uneven
- uneven-aged forest
- uneven bars
- uneven bars of Summer Special Olympics
- unevenness
- uneven number