例句與造句

1. the control strategy of hoist system of stacker crane is studied . through reliability analysing of control system of hoist, comparison of running and fork movement system, the weakness of controlling methodology of hoist system is found and then creates the improving model and the proposal of controlling system of hoist, in which use ac vvvf speed regulation instead of variable speed regulation, so as to get the stacker crane with better orientation precision and running speed
   通過對堆垛機的提升控制系統(tǒng)進行可靠性分析，對比行駛和伸叉控制系統(tǒng)，找出提升控制系統(tǒng)中控制方法最薄弱的環(huán)節(jié)，建立了提升控制系統(tǒng)的改進模型，提出了提升控制系統(tǒng)的改進方案，對堆垛機的升降電機控制采用交流變頻調(diào)速方法，代替原系統(tǒng)中提升電機的變級調(diào)速控制，以使堆垛機在升降時獲得更高的定位精度和運行速度。
2. It's difficult to find fork movement in a sentence. 用fork movement造句挺難的