请教一句话英译汉,高难度,PCBNmaterialsareutilisedinmanyareasofautomotivecomponentproduction,particularlyinthefinishmachiningofhardenedsteel,suchasinthe‘hard-turning’ofgearsandtransmissionshaftsandinthemachi

Question

请教一句话英译汉,高难度,
PCBN materials are utilised in many areas of automotive component production,particularly in the finish machining of hardened steel,such as in the ‘hard-turning’ of gears and transmission shafts and in the machining of grey cast iron brake discs.

Answer 1

PCBN 材料被用于众多汽车组件生产领域,尤其用于硬化钢的加工,如齿轮和传动轴的“硬车削” 以及灰铸铁制动圆盘的加工.
PCBN：Polycrystalline Cubic Boron Nitride 聚晶立方氮化硼