PHP与多任务或并发的关系十分复杂。
PHP has a complex relationship with multitasking or concurrency.
这是程序进行多任务处理或并发处理来自多个请求的结果的方法。
This is how the program multitasks or concurrently processes results from several requests.
事件是一个不同的并发概念，对管理I/O和相关的多任务职责很有用。
Events are a distinct concurrency concept useful for managing I/O and related multi-tasking responsibilities.
它是个并发性或“多任务”的实例。
多任务操作体系是一个能够并发地交互地执行多进程的操作体系。
A multitasking operating system is one that can simultaneously interleave execution of more than one process.
防空导弹武器指控系统是一个分布式实时多任务数据处理系统，其特点是实时性、并发、异步和多任务。
The antiaircraft missile′s command and control system is a distributed real-time multitask data processing system, its feature is real-time, parallel processing, asynchronous and multitask.
防空导弹武器指控系统是一个分布式实时多任务数据处理系统，其特点是实时性、并发、异步和多任务。
The antiaircraft missile′s command and control system is a distributed real-time multitask data processing system, its feature is real-time, parallel processing, asynchronous and multitask.
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