Different people have different access control rights to different resources . how to authenticate and authorize users is the key to build a stable system 不同的用户对不同的资源拥有不同的访问权限,如何对众多的用户进行验证和授权是成功构建系统的一个关键。
Validate system load flow and fault models using instantaneous voltage angles . use system - state measurements to increase stable system loading through reduced margin requirements 批准电力潮流和故障类型使用瞬时电压角度.通过缩减利润需求,使用系统状态测量以增加稳定的系统负荷
Intuitively , a stable system is one that remains at rest ( or in equilibrium ) unless excited by an external source and returns to rest if all excitations are removed 直观地说,如果一个系统是稳定的,则其停留在稳态(或者平衡点) ,除非是受到外部激励,且当外部激励去除后,输出又回到稳态点。
There ' s an obscure branch of mathematics known as " catastrophe theory , " which looks at how a small perturbation in a previously stable system can suddenly produce dramatic change 数学里有一个晦涩的分支叫“突变理论” ,它研究一个小小的干扰是如何使一个先前稳定的系统突然之间发生戏剧性变化的。
If you can separate your user interface interaction code from your data storage and business logic code , you ' ll have a robust , stable system that is capable of handling major changes 如果能将用户界面交互代码从数据存储和业务逻辑代码中分离出来,那么系统会更加成熟和稳定,可以应付大部分变化。