最好的运动是在安全区域内自由的奔跑。
You may think of it as the free running piston in your vehicle's engine.你可能会认为它当作免费的运行活塞在您的汽车的引擎。
In the paper, two controlling projects of sintering proportioning system were introduced, namely, synchronized and free running timing problem of proportioning disk and weight belt.介绍了在烧结工程配料系统的控制设计中普遍采用的两种技术方案,即配料圆盘和皮带秤的同步与不同步调速问题。