PID控制器的本质在于它能够根据系统的过去和现在状态预测其未来行为。
We must invest in people as much as we invest in technology.
Anyone can enjoy the perks of notoriety now and the duration of fame has been lengthened from Andy Warhol’s brief 15 minutes to a good 15 months if you’re willing to do certain things on camera.