Process synchronization is an emphasis and difficulty in the teaching of operating system course.

在操作系统课程的教学中，进程同步是其中一个重点，也是难点。

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The process synchronization and process mutual exclusion and semaphore mechanism, which are emphases and difficulty in the Operating System course.

操作系统中，进程同步和互斥问题以及与之相关的信号量机制是教学过程中的重点和难点问题。

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As a key course of computer science, the Operating System course plays an (important role) in cultivating students of the computer science specialty.

操作系统作为计算机科学与技术的核心专业课程，在计算机专业人才培养中具有极其重要的地位。

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One possible reason for the delay: The online versions don't need the Windows operating system to run, which of course undermines that product.

FORBES: OutFront

Google, of course, supplies the operating system and many of the cloud services and software, the rest coming from Google partners.

FORBES: Chromebooks Are Taking Off

The operating system will never entirely go away, of course.

FORBES: Cloud May Put Operating Systems Out of Their Misery