essential use

基本解释

When a draft project plan is created, it is based on essential use cases as the only structural units of measure available at the time.
当建立初步的项目计划时，它仅仅基于基本的使用用例和这个阶段可用的仅有的架构单元的数据。
An essential use case model, often referred to as a business or abstract use case model, models a technology-independent view of your behavioral requirements.
基本用例模型，通常称为商业或抽象用例模型，对行为需求的与技术无关的视图建模。
An essential use-case is a simplified, abstract, generalized use case that captures the intentions of a user in a technology- and implementation-independent manner.
基本用例是一种简化、抽象且通用的用例，它以独立于技术和实现的方式描述用户的意图。

But the legislation is not to everyone's liking. John VandeBerg, director of the Southwest National Primate Research Center in San Antonio,Texas, says the use of chimpanzees in biomedical research is essential.

When temperatures are this extreme several days in a row, power companies scramble to manage peak demand, often urging consumers to turn off non-essential use of electricity.
WHITEHOUSE: Energy and Environment Latest News The White House
The Video Training Basics project aims to equip a generation of film makers and viewers with the basic tools that are essential to use the audiovisual medium effectively in order to demonstrate the plurality of views and issues that form civil society.
UNESCO: Communication and Information