1. The toolhead is an essential part of the machine and is responsible for performing various tasks. (工具头是机器的重要部件，负责执行各种任务。)
2. The technician replaced the worn-out toolhead on the grinding machine. (技术人员更换了磨床上磨具头的损坏部分。)
3. The toolhead of the hard drive reads and writes data to the platters. (硬盘唱头将数据读写到盘片上。)