second fixed head disk

例句：

1. 1. The secondfixed head disk is responsible for the transmission of signals between the computer and its motherboard.
   第二个固定头盘负责在计算机与其主板之间传输信号。
2. 2. In the design of the new car, the second fixed head disk plays a crucial role in reducing noise.
   在新汽车的设计中，第二个固定头盘在减少噪音方面起着至关重要的作用。
3. 3.The second fixed head disk is an essential component of the engine's cooling system.
   第二个固定头盘是发动机冷却系统的一个关键部件。