Another common approach is to start a program with privileges, which then forks a second process that gives up all privileges and then does most of the work.
另一个常见的方法是,使用特权启动一个程序,这个程序然后派生放弃所有特权的第二个进程,而由这个进程来做大部分工作。
Sometimes these are known as coffee ICONS — you click them and then go get a cup of coffee while they start up a set of programs that you need to work with.
这些图标有时也称为咖啡图标,点击这些图标后,在其启动所需的一组程序时,您可以起身去倒杯咖啡。
Beginners should start with a tempo run of about 5 minutes and work up to about 20.
初学者应当从5分钟的门槛跑开始,慢慢提高到20分钟。
This piston is being brought out, so we expect 0 the work to be negative, negative. And we start o V2 ut with zero volume. We end up with a volume p2 of V2, and the external pressure is constant to p2.
所以我们可以想象功是负的,开始的时候体积是,最终的容积是,外界的压力恒为。
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