例句與造句

1. Position control is one of the motion control , it requires high control precision and high trace speed , so how to improve the dynamic characteristic and how to reduce the contour error of the system are the keys of the control
   位置控制是運動控制的一種，它要求較高的控制精度和跟蹤速度，因此如何提高系統(tǒng)的動態(tài)特性和減小系統(tǒng)的輪廓誤差是控制的關鍵所在。
2. It's difficult to find tracing speed in a sentence. 用tracing speed造句挺難的