roller contact timer

例句：

1. 1. The rollercontact timer is used to measure thetime it takes for a roller to rollover a certain distance.
   滚筒接触计时器用于测量滚筒滚动一定距离所需的时间。
2. 2. Theroller contact timer was designed to improvethe accuracy of the measurement process.
   滚筒接触计时器被设计用来提高测量过程的准确性。
3. 3.The roller contact timer is widely usedin industrial applications, such as in themanufacturing of roller bearings.
   滚筒接触计时器在工业应用中广泛使用，如制造滚珠轴承。