HSS turning bit

例句：

1. 1. The engine's performance is greatlyimproved by the use of HSS gear.
   使用HSS齿轮大大提高了发动机的性能。
2. 2. TheHSS gearbox has been designed toreduce vibration and noise during operation.
   HSS齿轮箱被设计来减少运行中的振动和噪音。
3. 3. The HSS gearbox isa critical component in the manufacturing process.
   HSS齿轮箱是制造过程中的一个关键组件。