地表火 [林] surface fire ; Ground-fire ; ground burning

表面淬火 [机] surface hardening ; surface quenching ; case-hardened

火焰表面淬火 flame surface quenching

表面点火 [动力] surface ignition

烟火表演 fireworks ; firework show

表面火焰处理 descarfing

火焰表面清理 scarfing ; flame scarfing

等温淬火表面硬化 [机] austemper case hardening

火焰加热表面淬火 flame case hardening ; surface hardening by flame heating

高频表面淬火 high frequency case hardening ; high-frequency surface hardening