Fast oil technology makes metal or alloy fuse-element course fast and caky namely, obtain the blame that has special micromechanism to balance an organization.

 
  • 快淬技術(shù)就是使金屬或合金熔體經(jīng)過(guò)快速凝固,獲得具有特殊微觀(guān)結構的非平衡組織。
今日熱詞
目錄 附錄 查詞歷史
国内精品美女A∨在线播放xuan