片语
flame case hardening火焰加热表面淬火
flame band hardening火焰表面硬化
marquench flame hardening分级火焰淬火法
flame hardening machine setter火焰淬火机安装员
flame cottom hardening火焰加热外貌淬火
flame band hardening blowpipe火焰表面淬火烧炬
liquid flame hardening液体火焰淬火
flame band hardening equipment火焰淬火装置
flame e hardening火焰硬化