本模型是在内存中创建 n 个工人线程, 1. 在无任务时处于休眠状态,不占用CPU时间, 2. 在有任务时,被唤醒,取得任务,完成任务后,又自动休眼.-This model is created in memory of workers n thread, 1. In the absence of tasks in a dormant, non-CPU-time, 2. In task has been awakened, and achieved mission to complet