工学 总论 释 top-down 自上而下 在规划的制定、实施过程中，规划及相关政策的执行者（政府）是主要的参与者，并集中关注在宏观层面决策和贯彻落实衔接的方式。
软件工程 释文 top-down 自顶向下
- Bureau of Veterinary Medicine, the Ministry of Agriculture of the People’s Republic of China
- Bureaus for Communications
- bureaus of urban official buildings and shops
- buret
- burette
- burflower-tree
- Burgas
- Burgen Beaver Reserve
- burgeoning art school
- Burger equation
- Burgers
- Burgers circuit
- Burgers equation
- Burgers vector
- Burgers' vector
- Burgers方程
- Burgess Shale Biota
- Burgess’s prediction study on success or failure for parole
- burgher society
- Burgi
- burglar alarm control panel
- burglary-resistant electronic lock
- burglary resistant mechanical locks
- burglary-resistant safe
- burglary resistant safety door