How is the grammar and vocabulary taught in this English lesson on ball screws?

滚子螺杆和滚珠丝杠是两种常见的传动元件，用于转换旋转运动为直线运动。它们的主要区别在于滚动体的不同。 滚子螺杆的滚动体是滚子，滚子与螺纹轴线呈交角，通过滚动运动实现转换。滚子螺杆在传动时具有高精度、高刚性、高负载能力等优点，但滚子与螺纹之间的接触面积较小，容易产生磨损和热量，需要加油润滑。 滚珠丝杠的滚动体是滚珠，滚珠与螺纹轴线垂直，通过滚动运动实现转换。滚珠丝杠在传动时比滚子螺杆具有更高的精度、更小的摩擦力、更长的使用寿命等优点，但价格通常也比滚子螺杆更高。 综合来说，滚珠丝杠的性能更加优越，适用于高精度、高速、高负载、长寿命等要求较高的场合，而滚子螺杆则适用于一些中小型机械设备的传动。

Are there any practical exercises or simulations included in this English teaching on ball screws?

Introduction to Ball Screw A ball screw is a type of mechanical linear actuator that converts rotary motion into linear motion with minimal friction. It consists of a threaded shaft and a nut that contains a set of ball bearings that roll in the grooves of the shaft and nut. The rolling motion of the balls reduces the friction and allows for smooth and precise movement. Advantages of Ball Screw Ball screws have several advantages over other types of linear motion systems. They have high precision and repeatability, which makes them ideal for applications that require accurate positioning and motion control. They also have high efficiency and can convert a large amount of rotary motion into linear motion with minimal energy loss. Applications of Ball Screw Ball screws are used in a wide range of applications, including CNC machines, robotics, aircraft and aerospace equipment, medical equipment, and semiconductor manufacturing equipment. They are also used in automotive steering systems, machine tools, and injection molding machines. Conclusion Ball screws are an essential component in many modern industrial systems. Their high precision, efficiency, and durability make them an ideal choice for applications that require accurate and reliable linear motion.