In some operating systems, a minimal allocatable physical unit of storage 在某些操作系统中,可分配的最小物理存储单位。
It is a kind of applied programming architecture, all of its functions can be defined as the isolated services which have definite and allocatable interfaces, it can form the process flow by allocating these services with the well-defined order 它是一种应用程序体系结构,其中所有功能都定义为具有明确的可调用接口的独立服务,可以以定义好的顺序调用这些服务来形成业务流程。