• 1. EF-S: 镜头
• 2. EF&S: 小数码周边

• 1.This article systematically describes the process of stainless steel pipe stock production by ESR. The result s of ESR process are compared with EF-AOD process in cost and effectiveness.
  系统论述电渣熔铸不锈钢管坯几种工艺方案，并估算了成本和效益，且与常规生产工艺作了对比。
  dict.yoduao.com

©2026 网易公司